A useful connector reference starts with a photograph you can compare with your own part. The shape of the mating face, the position of its keys and the way it locks together are often more useful than an online listing that simply says ‘BMW connector.’ This archive brings those visual details together with wiring references, housing numbers and documented vehicle applications.
The aim is practical: identify the physical variant, understand which repair parts belong with it, and make the next purchase easier to get right. Each entry shows what the evidence establishes and where the research still has a gap. A connector with a similar outline can have a different key, terminal, seal or pin assignment.
The archive is designed to grow. It begins with the older BMW junctions that are useful for harness repair and engine conversions, then expands into other engine, body and service-connector families. A researched name without a matching photograph stays in the research queue until there is enough visual evidence to make the entry useful.
Actual round C101 reference from Falk’s service guide. Compare the housing face and the retainer position. Read the C101 guide.
Four different numbers can describe one connector
A wiring designation tells you which connection a diagram is referring to. A BMW housing number identifies a service part. A connector manufacturer's number identifies that manufacturer's component. A seller's kit number identifies the package the seller supplies. The archive records these separately because one cannot safely stand in for another.
Physical example: Falk’s three-position Bosch-style kit, with housings, contacts and boots laid out. The kit photograph does not establish a BMW housing number. View this kit.
1. Terminal / pin part number
The individual metal contact. Its wire range, plating, retention and seal design matter.
2. Housing part number
The keyed plastic body. A lock, cover, boot or seal may have a separate number.
3. Kit part number / SKU
The seller’s package. Check which housings, contacts, seals and quantities are included.
4. Wiring-diagram designation
A circuit reference such as C101 or an X-number in a specified vehicle and location, rather than an orderable part number.
For example, C101 is a useful search term for an E30 engine-to-body connection. It does not tell you whether the car has the round or an earlier rectangular arrangement, which half you are holding, or which contact barrel belongs on a particular wire. Those are separate identification questions. X-numbers also need the vehicle and location attached to them.
Housing terminology can be confusing as well. A parts catalog may call a multi-position plastic component a ‘pin terminal.’ That is different from an individual metal pin. Here, each part has an explicit role: housing, mating housing, pin contact, socket contact, seal, cavity plug, lock, cover or boot. Contact gender is kept separate from the outside shape of the shell.
What to compare before ordering
Use these six checks together. A photograph helps identify the physical variant; it does not establish every vehicle application, pinout or terminal interchange.
Round C101: face and retainer
1. Face and positions
Count every cavity, including empty positions. Compare the contact arrangement and orientation.
Bosch-style 2-pin: keying and lock
2. Keys and locks
Compare locating keys, latch, coupling ring and secondary lock. Similar outlines can use different coding.
Bosch-style 5-pin: rear boot
3. Rear entry and seals
Check the wire exit, boot, wire seals and unused-cavity plugs. Identify each sealing component.
Bosch-style 3-pin: check the kit contents
4. Kit contents and identity
Check the supplied housings, contacts and boots against the kit description. Record any molded marks and the complete package number separately; a mold mark can differ from a service number.
Bosch-style 2-pin: contacts and seals
5. Contact and wire
Compare the mating section, locking features, wire range and insulation diameter. Diameter alone is insufficient.
C101: attach the correct vehicle context
6. Vehicle and system
Use the chassis, build month, engine, market and exact location. Follow the matching vehicle diagram for pin assignments.
These are photographs of the actual physical connector families identified in each caption. Use the images with the checks below; similar appearance alone does not prove interchange.
Application dates need context
A chassis production span is not a connector fitment range. Within one chassis, BMW can change the engine, wiring architecture, transmission options, keying or service housing. A replacement harness can also differ from the part originally fitted to the car. The useful application is therefore the narrowest one the evidence actually supports.
This archive distinguishes a factory manual's model year from a car's production month and from the revision date printed on the document. It also distinguishes a selected parts-catalog snapshot from a verified beginning or end of use. Where a source proves only that a housing appears on one selected car, that is exactly what the entry says.
The C191 research illustrates why that matters. A BMW bulletin describes an M20 application from a production-month threshold, while a later catalog snapshot shows the service components on a selected E30. Those are useful anchors. Joining them does not prove every engine, market and body style between those dates has the same part.
Each record below has an inspected matching source photograph. Application evidence and housing identity may have different confidence levels. Read those limits before treating a visual match as a purchase recommendation.
49photo-backed physical records
74inspected archive photos, including supporting views
91scoped application evidence records
247registered sources
Explore by chassis
These selectors use documented application anchors. They do not confirm fitment for every car. E9X groups the supported E90 and E92 examples; each result identifies its actual chassis.
No photographed entries match these filters yet. Clear a filter or browse all entries.
A01 / vehicle connector variant
C101 / E30 round engine/body junction
Documented core
Chassis evidence: E30. Scoped application evidence; confirm the model, engine and build details below.
The 1986 North American 325 factory manual already documents a round 20-position C101. The later 1989 manual and selected catalog support the familiar engine/body family. This refutes a universal 1988.5 introduction claim while leaving exact engine, market and production transitions open.
Diagram designation and context: C101
Positions / physical family20 · legacy round BMW
Vehicle evidenceBMW NA1986 325 and 1989 325i/325is factory anchors; selected 11/1989 Europe 325i catalog; no universal transition date
BMW / housing identity12521707284 socket-contact side; 12521707283 pin-contact side
ContactsBMW D 2.5 family; cavity wire sizes differ
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E30
325i, selected BB41 EUR catalog
11/1989 Catalog snapshot
20-position housing pair Selected car only; exact beginning/end and market variation unresolved Selected calendar/build context is not a verified model-year range.
E30
325i/325is, factory ETM
1989 | Not specified Model year
C101 circuits and engine/body location No universal pinout or full E30 range inferred
E30
BMW NA 325 (M20 eta-era manual)
1986 | 1986 manual; no build-month switch established Model year
Round C101 20 positions: 8500-6 PDF p119 and 9000-2 PDF p123 Refutes a universal 1988.5 start claim; does not establish every engine/market or exact transition.
E30
BMW NA 325i/325is (M20)
1989 | 1989 manual Model year
C101 20 positions near power distribution box, 9000-3 PDF p147 Source corroboration of existing V02, not a new physical variant.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
12521707284
Housing for socket contacts
Catalog documented Do not call a housing gender by its exterior shape; record contact gender separately. Additional early-car research: high from catalog adjacency.
12521707283
Housing for pin contacts
Catalog documented Mating pair supported by diagram; confirm exact variant on sample. Additional early-car research: high from catalog adjacency.
12521707302
Protection cap
Catalog documented Accessory; not the connector housing.
61131376191
Circular pin contact 2.5
Catalog documented Size refers to conductor area; 2.5 refers to mating diameter.
61131376193
Circular pin contact 2.5
Catalog documented Not a housing number.
61131376195
Circular pin contact 2.5
Historical catalog line; ended Catalog also lists silver-plated variant 61139344421; do not substitute plating without checking.
61131376202
Socket contact 2.5
Catalog documented Loose socket terminal.
61131376204
Socket contact 2.5
Catalog documented Loose socket terminal.
61131376206
Socket contact 2.5
Catalog documented Loose socket terminal.
What still needs verification
1988.5+ is one seller’s claim, not the verified start year. The two photographed square C101 families have separate records below. Exact kit-to-BMW-number match unconfirmed.
Do not advertise round style as beginning 1988.5: inspected 1986 factory ETM proves earlier use.
Do not infer a universal switch date or every engine/market from US model-year anchors.
No interchange or wiring/pinout validation performed; actual sample and VIN still needed for product sale.
A02 / vehicle connector variant
C191 / M20 injector/sensor sub-harness junction
Documented core
Chassis evidence: E30, E34. Scoped application evidence; confirm the model, engine and build details below.
P03 — Seven-position housing 12521718126 EmiAuto EU seller watermark
Additional photographs (1)
P05 — c191 Upfrontmotors / eBay
Falk 2.5 mm repair options
Falk lists this connector family for its 2.5 mm round-contact range. Compare your original terminal, lock and seal style before selecting a size.
The seven-position injector junction has useful catalog, factory and physical-photo evidence. Keep the photographed harness half and separately cataloged service housings distinct until markings and a mating check close the exact join. The roughly 05/1988 bulletin division is a harness-construction revision; the stated M20 C191 production scope begins 09/1987. The actual seven-pin rail photograph is distinct from the rejected parts drawing.
Diagram designation and context: C191
Positions / physical family7 · legacy round BMW
Vehicle evidenceE30/E34 M20 from 09/1987 bulletin scope; selected catalog anchors in Fitment
BMW / housing identity12521718125 pin housing; 12521718126 plug housing; 12521718127 lock ring
ContactsFalk lists C191 in its round-contact family; verify each original contact and wire size
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E30 + E34
M20 engines in SI 12 05 89
From 09/1987; end not stated Bulletin production scope
C191 application Clean original needed; not every E30 engine is M20 Selected calendar/build context is not a verified model-year range.
E30
325i AG51 EUR
12/1992 Catalog snapshot
7-position pair + lock ring next to injection harness Model-specific snapshot, not end of use Selected calendar/build context is not a verified model-year range.
E34
525i HC12 EUR, M20-era
12/1987 Catalog snapshot
Same 7-position pair + lock ring Do not label this a 1987 US model-year car Selected calendar/build context is not a verified model-year range.
E30
BMW NA 325i/325is (M20)
1989 | 1989 manual Model year
C191 seven-position face, low LH engine: 8500-9/10 PDF pp141/142, 9000-3 PDF p147 No end date or non-M20 inference; circuit designation does not identify an exact housing number.
E30 + E34
M20 vehicles in BMW SI 12 05 89
From 09/1987; approximate 05/1988 harness-construction revision Bulletin production scope
C191 introduction scope starts 09/1987; 05/1988 changes sheathed injector harness to cable-rail version Indexed factory bulletin mirrored by third party; direct clean original still needed. 05/1988 is not C191 introduction. Selected calendar/build context is not a verified model-year range.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
12521718125
Pin housing / catalog pin terminal
Catalog documented Multi-position housing, not a loose metal pin. Catalog component role, not an independently measured contact-gender or photo-to-mate proof. Additional early-car research: strong application/geometry join, number not legible on inspected rail photo.
12521718126
Plug housing
Catalog + package photo Photo P04 package marked this number. Catalog component role, not an independently measured contact-gender or photo-to-mate proof. Additional early-car research: strong catalog pair; exact sample not measured.
12521718127
Lock ring
Catalog documented Separate piece; include in future kit BOM. Additional early-car research: catalog confirmed.
What still needs verification
Production end dates not established. Catalog joins and photographs support the assembly; a physical mating test is still pending.
P05 shows seven male contacts but does not prove its shell is 12521718125. Housing number-to-photo association remains a catalog/seller join; physical sample not tested.
The 05/1988 rail revision is not the first appearance of C191; bulletin scope begins 09/1987.
C191 is not a part number.
The same 7-position shell family appears in other BMW functions; seven cavities alone do not prove injector application.
Prior c191-housing.webp image in root work is a diagram and must be rejected from photo gallery.
A03 / vehicle connector variant
E36/Z3 X20 engine-harness half
photo first candidate
Chassis evidence: E36, Z3. Scoped application evidence; confirm the model, engine and build details below.
E36-EP01 — Actual black 25-cavity round shell, hollow triangular central key, separate socket contacts, gray/yellow wire seals and white blanks. Tulay's Wire Werks; watermarked
Additional photographs (1)
E36-EP16 — Actual round 25-position face, triangular key and cavity numbers. DAD-FAB listing, original owner unconfirmed
Falk 2.5 mm repair options
Falk lists this connector family for its 2.5 mm round-contact range. Compare your original terminal, lock and seal style before selecting a size.
The factory 1998 ECE E36 and Z3 manuals identify a black 25-position X20. The photographed engine-side kit shows a recessed triangular key and separate socket contacts. Its exact BMW housing number remains unresolved; compare the keying with the mating body-side half.
Diagram designation and context: X20
Positions / physical family25 · legacy round BMW
Vehicle evidenceSelected E32/E34/E36/Z3 catalog or factory-manual anchors only; see fitment records
BMW / housing identityExact BMW housing number for the pictured X20 kit is unresolved; 108/109/116 are separate catalog-reference records
ContactsRound contact geometry observed; exact metal terminal and wire-size selection requires the scoped part/claim evidence
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E36
ECE MY1998 ETM multi-engine/body scope; X20
1998 | 05/1999 manual revision Model year/manual revision
25 positions, black; rear LH engine compartment Index is not proof every covered body/engine/transmission has this connector. No complete production interval.
Z3 E36/7
ECE MY1998 ETM; X20
1998 | 05/1999 manual revision Model year/manual revision
25 positions, black; rear LH engine compartment Not all Z3 years, engines or markets.
What still needs verification
No complete model/year/body/engine range. Housing108/109/116 cannot be joined solely by the nickname or similar photographs. Seller seal/wire ranges are kit choices, not vehicle cavity assignments.
A04 / vehicle connector variant
X69 black/gray keyed engine-harness shell
photo first candidate
Chassis evidence: E36, Z3. Scoped application evidence; confirm the model, engine and build details below.
E36-EP03 — Actual 25-cavity shell with triangular key at a different clocking relative to peripheral keyways than EP01. Gray inner face and dark outer ring. Tulay's Wire Werks; watermarked
Falk 2.5 mm repair options
Falk lists this connector family for its 2.5 mm round-contact range. Compare your original terminal, lock and seal style before selecting a size.
The photographed gray-keyed 25-position kit is sold as X69. Documented X69 colors and functions vary with the vehicle configuration. Compare the keying and application evidence; color alone does not establish interchange.
Diagram designation and context: X69
Positions / physical family25 · legacy round BMW
Vehicle evidenceSelected E32/E34/E36/Z3 catalog or factory-manual anchors only; see fitment records
BMW / housing identityExact BMW housing number unresolved; Kit-0105 is a seller kit SKU
ContactsRound contact geometry observed; exact metal terminal and wire-size selection requires the scoped part/claim evidence
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E36
ECE MY1998 ETM multi-engine/body scope; X69
1998 | 05/1999 manual revision Model year/manual revision
25 positions, gray; rear LH engine compartment Index is not proof every covered body/engine/transmission has this connector. No complete production interval.
Z3 E36/7
ECE MY1998 ETM; X69
1998 | 05/1999 manual revision Model year/manual revision
25 positions, gray; rear LH engine compartment Not all Z3 years, engines or markets.
E36
Separate black Diesel row in MY1998 ECE ETM
1998 | 05/1999 revision Conflicting/configuration-specific index row
Factory index additionally lists X69 25 black (Diesel) Evidence conflict is preserved. This does not mean the gray Kit-0105 photo matches the black Diesel style.
What still needs verification
Do not apply this gray style to early black X69 or E34 white X69 without their photos. Kit listed contacts 2+24=26, not proof of 26 cavities. No verified date boundary.
EARLY-02 / vehicle connector variant
C101 rectangular 19-position E30 interface
Confirmed physical 19-position family and NA 1984 318i anchor; housing half join requires sample
Chassis evidence: E30. Scoped application evidence; confirm the model, engine and build details below.
The rectangular 19-position C101 is a distinct early E30 family. A 1984 North American 318i factory manual provides a specific application anchor. The photographed remake has 19 cavities but is supplied with ten contacts. Its visible molded number and seller interchange number remain a housing-half relationship to verify.
Diagram designation and context: C101; note factory text typos described below
Positions / physical family19 · legacy rectangular BMW
Vehicle evidenceE30 BMW NA 318i (M10) 1984; E30 BMW NA 325e/318i manual 1985
BMW / housing identity61131370609 Photo molding 1 370 609 on source EB19; catalog fuse-box housing item 8; 12521277533 Catalog fuse-box housing item 9 and seller interchange/title for 19-position kit
ContactsMixed larger/smaller round contacts; not certified as the later D2.5 system
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E30
BMW NA 318i (M10)
1984 | 02/1984-era manual reference; no changeover month established Model year
C101 explicitly 19 pins on power distribution box, page 204 / PDF p125 1985 C101 face drawing is inconsistent (17 positions), and 325e text mislabels distribution-box connector C103. Do not use these errors to imply all early E30 cars have one shell.
Candidate housing/function association visible marking but reproduction provenance uncertain. Photo marking is 1 370 609; seller interchange/title is 12521277533. The listed pair must not become a certified mating-half assertion.
12521277533
Catalog fuse-box housing item 9 and seller interchange/title for 19-position kit
Candidate housing/function association candidate mating/interface number; not the visible marking in inspected image. Photo marking is 1 370 609; seller interchange/title is 12521277533. The listed pair must not become a certified mating-half assertion.
What still needs verification
17 and 19 cavity shells are physically different.
Do not repeat E30 Zone shorthand square=Jetronic and round=Motronic as a complete application rule; early 325e Motronic introduces exceptions and factory labeling inconsistencies.
Seller package has only 10 contacts; housing capacity is 19.
Catalog 61131370609/12521277533 is not yet a verified male/female pairing for sale.
EARLY-03 / vehicle connector variant
C101 rectangular 17-position E24/E28 interface
Confirmed factory family and photo, BMW housing PN unresolved
Chassis evidence: E24, E28. Scoped application evidence; confirm the model, engine and build details below.
Separate reproduction opportunity for E24/E28 M30/S38 swaps/restoration; cannot substitute E30 19-position kit merely because both are called C101.
Diagram designation and context: C101
Positions / physical family17 · legacy rectangular BMW
Vehicle evidenceE24 BMW NA 633CSi (M30) 1983; E28 BMW NA 535i (M30) 1987/1988; E28 BMW NA M5 (S38) 1988
BMW / housing identityExact BMW housing number unresolved; designation is not a part number
ContactsMixed larger/smaller round contacts; exact BMW terminal numbers and wire sections unresolved
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E24
BMW NA 633CSi (M30)
1983 | 1983 manual Model year
C101 17 pins RH side of power distribution box, page 203 / PDF p71 Specific NA model anchor; no full E24 range, E21 interchange or BMW service housing PN established.
E28
BMW NA 535i (M30)
1987/1988 | 1987 vehicles before 09/1986 excluded by cover Model year + manual build limitation
C101 rectangular 17 face and location: 8500-11 PDF p166; 9000-3 PDF p173 Cover directs pre-09/1986-built 1987 cars to 1986 ETM. Do not silently cover those cars.
E28
BMW NA M5 (S38)
1988 | 1987/1988 title manual scope; US M5 model-year anchor Model year
Shared manual shows C101 17 interface, 8500-11/9000-3 No all-market S38 application or 1987 US M5 claim; exact housing PN unresolved.
What still needs verification
Listing title says m10/m20, but factory anchors are M30 633CSi/535i and S38 M5. Seller wording is not the application authority.
E21 fitment not demonstrated.
No new-housing dimensional or mating test performed.
Restoration replacement housing; visually distinguish from 20-position screw-cap diagnostic connector and from engine/body C101.
Diagram designation and context: Diagnostic connector; no universal C101 label
Positions / physical family15 · legacy diagnostic circular BMW
Vehicle evidenceE30 BMW NA 325e/318i (M20/M10) 1985; E30 BMW NA 325 (M20 eta-era manual) 1986; E28 BMW NA 535i/M5 manual (M30/S38) 1987/1988; E21 BMW USA 320i, catalog 1733 1982 production context; E21 BMW 320i M10, inspected factory page 1981
BMW / housing identity12521273100 Plug terminal for engine diagnosis; actual fifteen-position item photo from ECS
ContactsNot measured; no universal claim all early diagnostic cavities share later round C101 contacts
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E30
BMW NA 325e/318i (M20/M10)
1985 | 1985 manual Model year
Diagnostic mating face numbered through 15, page 301 / PDF p201 15-position capacity is not the number of populated terminals; no universal early-BMW range.
E30
BMW NA 325 (M20 eta-era manual)
1986 | 1986 manual Model year
Early 15-position diagnostic connector, 8500-0/8500-2 PDF pp113/115 Different from same-car round 20-position engine/body C101.
E28
BMW NA 535i/M5 manual (M30/S38)
1987/1988 | 1987 cars built before 09/1986 excluded Model year + manual build limitation
15-position diagnostic interface shown on 8500-0/1 PDF pp155/156 Manual scope covers 1988 US M5; do not claim every 1987-on BMW already uses 20-position diagnostics.
E21
BMW USA 320i, catalog 1733
12/1982 selected; housing catalog start 09/1980 Catalog snapshot + part date line
Engine diagnosis housing 12521273100 from 09/1980 Part/date line does not establish each cavity population; earlier 61311350861 is separate. Selected calendar/build context is not a verified model-year range.
E21
BMW 320i M10, inspected factory page
1981 | 05/1981 page revision, within 1981-1983 compilation Model year + page revision
Factory 4-2 calls diagnostic connector 15-pin circular on top front of engine; 4-1B shows face Apply inspected 1981 heading; compilation filename alone is not every 1981-83 build boundary.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
12521273100
Plug terminal for engine diagnosis; actual fifteen-position item photo from ECS
Catalog documented; photo/function join limited as noted high shell identity; vehicle-specific terminal population still varies. Exact original shell markings and physical mating/terminal fit have not been bench-tested.
What still needs verification
Do not use all BMW until 1987/88 as an exact changeover rule.
Do not conflate number of occupied contacts with 15-position capacity.
E21 pre-09/1980 has distinct catalog number 61311350861; not demonstrated same shell.
EARLY-06 / vehicle connector variant
Round 20-position diagnostic service housing
Confirmed factory 1989 application, actual face photo, and exact outer-shell catalog number
Chassis evidence: E30, E34, E32, Z3, E36. Scoped application evidence; confirm the model, engine and build details below.
E30-P-diag20-face — diag 20 face E30 Zone uploader Grrrmachine; original photographer/ownership not independently established
Additional photographs (4)
E36-EP14 — Actual black cylindrical diagnostic housing, threaded lower body, retention ramps. Face is oblique. Pantri Trading / eBay sellerE36-EP15 — Actual black cylindrical diagnostic service housing, keyed upper rim, threaded body; internal cavities not visible. ECS Tuning; copyright watermark 2011E30-P-diag20-outer — diag 20 outer ECS Tuning, watermark copyright 2011E30-P-diag20-location — diag 20 location BMWE 30.net / Billswebspace mirror; original photographer unknown
BMW’s 1998 E36 factory manual identifies X6002 as a black 20-position diagnostic connection at the rear right of the engine bay. Selected E30, E32, E34 and Z3 catalogs list the diagnostic outer housing and nut. This is separate from round C101 despite the equal position count; insert and cover selection still require the correct application.
Diagram designation and context: Diagnostic service connection / X6002 in scoped later documentation The diagnostic designation varies by chassis/manual, including X1532 in later contexts; do not rename every diagnostic socket X6002.
Positions / physical family20 · legacy diagnostic circular BMW
Vehicle evidenceE30 and selected E32/E34/E36/Z3 factory/catalog anchors; see each dated application
BMW / housing identity12521711218 Diagnostic outer plug housing; empty shell in ECS photograph; 12521711219 Nut, DIAGNOSE; 12521724690 E30 diagnostic cover in selected catalog
ContactsExact terminal/insert assembly not independently itemized in this subtask
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E30
BMW NA 325i/325is M20
1989 | 1989 manual Model year
Diagnostic face numbered through 20,8500-0 PDF p132 Separate from round 20-position C101 and from 15-position E28 diagnostic connector.
E30
325i BB41 Europe M20
11/1989 selected Catalog snapshot
Diagnostic outer housing 12521711218, nut 12521711219, cover 12521724690 Outer housing photo lacks 20-position insert. LaterOBD-II cap may have different bridge functions. Selected calendar/build context is not a verified model-year range.
E34
Selected 525ix HJ81 EUR 03/1996
03/1996 catalog anchor Catalog snapshot
25-position 108/109 service housings and diagnostic shell 12521711218 appear in wiring-connections table Generic 20/25-position alternatives; no X20 label or guaranteed circuit assignment. Selected calendar/build context is not a verified model-year range.
E32
Selected 740i GD42 EUR 02/1994
02/1994 catalog anchor Catalog snapshot
108/109 service housings, D 2.5 terminal rows and diagnostic pieces listed No exact X20-to-housing photo join. Does not establish a complete production interval. Selected calendar/build context is not a verified model-year range.
Z3 E36/7
Selected CJ33 USA 09/1998 Z3 2.8 M52
09/1998 catalog anchor Catalog snapshot
108 and 116 distinct 25-POL housings; diagnostic housing 12521711218 also listed No X20/X69 assignment, no 116 mate, no complete model-wide range. Selected calendar/build context is not a verified model-year range.
Z3 E36/7
Z3 2.8 M52 ECE RHD February 1998
02/1998 catalog anchor Catalog snapshot
Same 108/116/diagnostic part list on independent catalog mirror A second mirror is not an independent physical measurement. Selected calendar/build context is not a verified model-year range.
X6002, 20 positions, black; rear RH engine compartment. PDF page 495 and connector-face reference 8500.0-04 figure 4. Not a complete production range.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
12521711218
Diagnostic outer plug housing; empty shell in ECS photograph
Catalog documented; photo/function join limited as noted catalog/photo high; does not include populated insert in shown photo. Exact original shell markings and physical mating/terminal fit have not been bench-tested.
12521711219
Nut, DIAGNOSE
Catalog documented; photo/function join limited as noted catalog high. Exact original shell markings and physical mating/terminal fit have not been bench-tested.
12521724690
E30 diagnostic cover in selected catalog
Catalog documented; photo/function join limited as noted catalog high; do not substitute later OBD-II bridge cap by appearance. Exact original shell markings and physical mating/terminal fit have not been bench-tested.
12521711218
Diagnostic service housing
Catalog + dedicated actual photos Photos do not prove complete20-contact insert is supplied; ECS7-DIAG is not a cavity count.
12521711219
Diagnostic nut
Catalog documented Separate mounting nut.
12521724690
Diagnostic cover
Catalog documented Do not assume same cover as all Z3/OBDII builds.
12521703202
Diagnostic cover, OBDII
Catalog documented Market/build-specific cover and electrical function require separate checking.
What still needs verification
Empty outer-shell photo cannot demonstrate 20 cavities; use the separately inspected face photo.
ECS title 7-DIAG is catalog text, not a 7-pin capacity.
Do not claim all 1987-on BMW have this connector: inspected 1987/88 E28 535i/M5 manual still shows 15-position interface.
Wiki face photo has no donor VIN/date; factory application anchor comes from ETM, not image metadata.
Photo shows a service shell, not a fully populated20terminalassembly. The exact insert, seal and cover selection must be VIN/market checked. An ECS title7-DIAGdoes not mean7cavities.
EARLY-07 / vehicle connector variant
Front door C404/C405 21-position interface
Confirmed factory count and disassembled owner photo; catalog part join strong
Chassis evidence: E30. Scoped application evidence; confirm the model, engine and build details below.
E30-P-door21-face — door 21 face The_Glory, R3VLimited restoration author
Additional photographs (2)
E30-P-door21-disassembled — door 21 disassembled The_Glory, R3VLimited restoration authorE30-P-door21-assembled — door 21 assembled The_Glory, R3VLimited restoration author
Strong repair candidate: damaged shells and corroded door circuits; sell correct three housing pieces and 1.6 contacts independently of engine connector kits.
Diagram designation and context: C404 RH front door; C405 LH front door in LHD factory anchors
Positions / physical family21 · legacy door D1.6 BMW
Vehicle evidenceE30 BMW NA 325e/318i LHD front doors 1985; E30 BMW NA 325i/325is LHD front doors 1989
ContactsD1.6 L11.7 per BMW repair-contact catalog; mapping to C40x corroborated by owner documentation
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E30
BMW NA 325e/318i LHD front doors
1985 | 1985 manual Model year
C404/C40521 positions above RH/LH front door jamb switches, page 213/PDF p193 Do not extrapolate to1984 door arrangements; RH/LH are vehicle sides, not universal driver/passenger.
E30
BMW NA 325i/325is LHD front doors
1989 | 1989 manual Model year
21-position horseshoe/open-top face,8500-11/PDF p143; locations 9000-4/PDF p148 Physical 21-position family; not later 26/27-position connectors. Wiki insert numbering through 22 conflicts with factory 21.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
61131375688
Door-side female socket holder, catalog item 14
Catalog documented; photo/function join limited as noted catalog plus independent owner mapping. Exact original shell markings and physical mating/terminal fit have not been bench-tested.
61131380587
Body-side outer shell, item 15, retains four positions
Catalog documented; photo/function join limited as noted catalog plus owner disassembly mapping. Exact original shell markings and physical mating/terminal fit have not been bench-tested.
61131375690
Body-side inner pin insert, item 16
Catalog documented; photo/function join limited as noted catalog plus owner disassembly mapping. Exact original shell markings and physical mating/terminal fit have not been bench-tested.
61131371605
Circular male contact
Catalog dimension; owner-documented C40x association Different nominal diameter from D2.5 C101 contacts. The C40x mapping comes from owner documentation, not an explicit connector-designation column in BMW parts data. Measure retention, wire barrel and cavity before substitution.
61131371607
Cable socket round female
Catalog dimension; owner-documented C40x association Different nominal diameter from D2.5 C101 contacts. The C40x mapping comes from owner documentation, not an explicit connector-designation column in BMW parts data. Measure retention, wire barrel and cavity before substitution.
What still needs verification
Do not advertise E30 front doors as 26/27-position from later chassis generic listings.
Wiki prose says main insert pins 5-22; factory diagrams inspected end at 21. Retain factory 21-capacity label.
Early 1984 ETM instead lists different 13-pin door-related connectors near speakers; do not extend 1985/89 shell backward to every 1984 car.
RH/LH refer vehicle sides, not universal driver/passenger on RHD.
EARLY-08 / vehicle connector variant
C302 25-position accessory junction
Confirmed factory identification and actual donor photo; full housing PN and terminal recipe unresolved
Chassis evidence: E30. Scoped application evidence; confirm the model, engine and build details below.
Restoration, OEM accessory additions and repair; useful archive article linking named circuit bays to housing appearance without inventing full-housing PN.
Diagram designation and context: C302
Positions / physical family25 · legacy modular accessory BMW
Vehicle evidenceE30 BMW NA 325e/318i accessory junction 1985; E30 BMW NA 325i/325is accessory junction 1989
BMW / housing identityExact BMW housing number unresolved; designation is not a part number
ContactsModular accessory bays and mixed connection geometry; not one verified universal 25-contact kit
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E30
BMW NA 325e/318i accessory junction
1985 | 1985 manual Model year
C302 25-position junction upper LH footwell, page 213/PDF p193 No full housing part number or complete universal terminal BOM established.
E30
BMW NA 325i/325is accessory junction
1989 | 1989 manual Model year
C302 25-position accessory connector,8500-1/PDF p133 and 9000-4/PDF p148 Unequal modular keyed bays; capacity does not mean all bays populated; not X20 round 25.
What still needs verification
25-position factory description is not proof that every bay is populated.
Do not substitute engine X20 25-position round connector.
Body-side full housing part number and each accessory mating shell remain open.
E36-X20-CHASSIS / related mating half
E36/Z3 X20 chassis-harness half
photo first candidate
Chassis assignment: Seller-associated candidate; no chassis selector assignment. Browse by physical details and read the application limits.
E36-EP02 — Actual opposite shell, projecting triangular key, male round contacts shown loose. Tulay's Wire Werks; watermarked
Falk 2.5 mm repair options
Falk lists this connector family for its 2.5 mm round-contact range. Compare your original terminal, lock and seal style before selecting a size.
Seller gives explicit Kit-0014 mate and shows the projecting triangular key and male contacts.
Diagram designation and context: X20
Positions / physical family25 · legacy round BMW
Vehicle evidenceSelected E32/E34/E36/Z3 catalog or factory-manual anchors only; see fitment records
BMW / housing identityseller_kit: Kit-0015; mate: Kit-0014
ContactsRound contact geometry observed; exact metal terminal and wire-size selection requires the scoped part/claim evidence
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E36/Z3
Tulay Kit-0015 chassis half; seller-stated mate of Kit-0014
Checked 2026-11-08 Seller application claim
25-position chassis-side shell; projecting triangular key; loose male contacts photographed No model-year/build/engine boundaries; no exact BMW housing number.
What still needs verification
Same junction family as EC01; do not count as a new connector family. The seller term receptacle describes the shell, while supplied contact gender is male. Extra ABS application remains seller-only.
E36-X6031 / vehicle connector variant
E36 X6031 black round 12-position
photo first candidate
Chassis evidence: E36, Z3. Scoped application evidence; confirm the model, engine and build details below.
E36-EP07 — Actual depinned black round shell: nine outer large cavities and three inner large cavities, twelve total, with small auxiliary molding holes; numbered face. TipsyMcStagger / LS1Tech original builder
Additional photographs (1)
E36-EP08 — Actual disconnected round connector hangs by modified brake/hydroboost installation. TipsyMcStagger / LS1Tech original builder
Falk 2.5 mm repair options
Falk lists this connector family for its 2.5 mm round-contact range. Compare your original terminal, lock and seal style before selecting a size.
Factory E36 MY1998 chart PDF495: 12 black, rear LH engine compartment, view8500.0-01 fig6/B120015 (PDF566). Photo matches nine outer plus three inner cavities. This ECE manual routes S50 B32 MSS50 and SMG circuits through X6031 (PDF155,157,247,249); it is not universally an OBD-II-only connector. Builder later identifies receiving car as 1998 328iS; Z3 US-type service sources explicitly show 1997 M52 2.8 and 1998 S52 M Roadster X6031.
Diagram designation and context: X6031
Positions / physical family12 · legacy round BMW
Vehicle evidenceSelected E32/E34/E36/Z3 catalog or factory-manual anchors only; see fitment records
BMW / housing identity
ContactsRound contact geometry observed; exact metal terminal and wire-size selection requires the scoped part/claim evidence
1998 | 05/1999 revision Factory index and circuit context
12 black rear LH engine compartment; round 9+3 face B120015 Not universally OBD-II-only. Do not infer all engines or all years.
E36
Original builder identifies receiving vehicle as 1998 328iS
1998 | No build month/VIN First-person photo/donor statement
Actual depinned black 12-cavity X6031 face photographed Swap harness/bracket modified; not stock cavity population or complete factory-location evidence.
Z3 E36/7
Z3 Roadster 2.8 M52 service data
1997 | Model-year anchor Model year/service database
X6031 12 black, rear LH engine compartment Separate US-type service source; no actual Z3 donor photograph. Do not infer all Z3s.
Z3 E36/7
M Roadster S52 service data
1998 | Model-year anchor Model year/service database
X6031 12 black, rear LH engine compartment Separate US-type service source; no all-year or all-market claim.
What still needs verification
No standalone housing number or VIN/build month. Modified builder photos do not establish stock pin population. Absence from ECE Z3 ETM text conflicts with blanket all-Z3 claims.
E36-X33 / vehicle connector variant
E36 black 12-position ignition-switch junction, X33
assembly reference candidate
Chassis evidence: E36. Scoped application evidence; confirm the model, engine and build details below.
E36-EP09 — Actual black rectangular ignition-switch plug, two rows of six circular cavities; some contacts absent. Reseller CDN; original photo owner unconfirmed, ECS-style source filenames
Additional photographs (1)
E36-EP10 — Actual later switch assembly with black 6x2-style connector, oblique view. BimmerWorld; watermarked
Falk 2.5 mm repair options
Falk lists this connector family for its 2.5 mm round-contact range. Compare your original terminal, lock and seal style before selecting a size.
X33 factory location below steering column behind LH footwell trim; 12 black, 6x2 circular face, B120004.01, PDF567 fig6. Selected CC83 USA catalog prints 61321383365 through 01/1995. EP09 clearly shows 6x2 circular shell and wire label on actual assembly. Selected CC83 USA catalog prints61328360925 from 01/1995; actual BimmerWorld assembly photo has same black 6x2-style plug.
Diagram designation and context: X33
Positions / physical family12 · BMW rectangular round-contact junction
Vehicle evidenceSelected E32/E34/E36/Z3 catalog or factory-manual anchors only; see fitment records
BMW / housing identityswitch_assembly: 61321383365
ContactsRound contact geometry observed; exact metal terminal and wire-size selection requires the scoped part/claim evidence
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E36
Selected CC83 USA 318i catalog
61321383365 through 01/1995; 61328360925 from 01/1995 Catalog line applicability
Two switch-and-wire assembly numbers bracket a 01/1995 change These are assembly numbers, not connector housings; no shell redesign inferred. Other market/RHD switches exist. Selected calendar/build context is not a verified model-year range.
E36
ECE MY1998 X33 factory index and face
1998 | 05/1999 revision Factory manual
12 black, LH footwell underside of steering column; 6x2 round cavities Exact standalone housing and metal-contact numbers unresolved.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
61321383365
Ignition switch and wire assembly; early selected application
Assembly number, not loose housing Selected USA CC83 line through01/1995; actual6x2face photo. No global shell change boundary.
61328360925
Ignition switch and wire assembly; later selected application
Assembly number, not loose housing Selected USA CC83 line from01/1995; ECE/RHD variants also exist.
What still needs verification
Assembly number is not a housing number. Only selected USA application has this changeover; do not infer shell redesign or global fitment.
Do not count as a separately proven connector-shell family. ECE RHD catalog also lists922 and other switch variants. Oblique photo is weaker than early face photo.
Chassis evidence: E36. Scoped application evidence; confirm the model, engine and build details below.
E36-EP11 — Actual ribbed round black cruise-control housing, oblique mating view. ECS Tuning; copyright watermark 2010
Factory location links X70 to M25 cruise actuator at front LH engine bay (PDF527). Chart says7 pins black (PDF480), referenced drawingPDF567 fig2 numbers eight cavities. Selected E36 BJ11 catalog explicitly lists socket housing 61131392226, 7 POL, with 61130007571 D 2.5 ELA leaded socket1.0–2.5 mm² and protection cap 61131383903.
Diagram designation and context: X70
Positions / physical familyUnresolved · legacy round BMW
Vehicle evidenceSelected E32/E34/E36/Z3 catalog or factory-manual anchors only; see fitment records
BMW / housing identityhousing: 61131392226; catalog_description: 7 POL socket housing; terminal_with_wire: 61130007571; protection_cap: 61131383903; mate: Actuator assembly; separate mate housing not established
ContactsRound contact geometry observed; exact metal terminal and wire-size selection requires the scoped part/claim evidence
11/1992 selected catalog; actuator/control unit lines have 09/1994 changes Catalog snapshot
61131392226 housing (7 POL), 61130007571 leaded D 2.5 socket, 61131383903 cap No housing change boundary printed. Factory referenced face has eight numbered cavities; preserve discrepancy. Selected calendar/build context is not a verified model-year range.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
61131392226
Cruise-control socket housing
Catalog and actual oblique photo; count unresolved Do not silently resolve seven/eight discrepancy. Obtain straight-on sample face.
61130007571
Snap-in receptacle D 2.5 ELA with cable
Explicit catalog companion One catalog line; not a complete per-cavity population or conductor-size schedule.
61131383903
Protection cap
Explicit catalog companion Separate cap; no blanket fitment beyond selected housing/application.
What still needs verification
Cavity-count discrepancy is unresolved. Do not rewrite seven as eight without qualification or say exact mating face fully confirmed from oblique EP11. Availability conflict: ECS says unavailable, others list orderable.
1998 | 05/1999 manual revision Factory manual model year and revision
X503 12 white; round connector face and light-switch context Catalog does not label X503. Geometry/function join is strong; no all-E36 production range or loose terminal BOM.
E36
M3 CD93 USA selected catalog
10/1996 selected catalog Catalog snapshot
61131387114 light-switch housing, 12 POL; catalog does not label X503 Catalog does not label X503. Geometry/function join is strong; no all-E36 production range or loose terminal BOM.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
61131387114
Light-switch connector housing
Catalog function + actual both-side photos X503 join uses factory location/function/face, not printed X-number in catalog.
What still needs verification
Good geometry/function/catalog join, still no catalog X503 label. Date anchor is10/1996M3USA, not allE36modelyears. Loose terminal and seal numbers not verified; unsealed seller used-kit is not proof of new availability.
Chassis evidence: E34, E32, Z3. Scoped application evidence; confirm the model, engine and build details below.
E36-EP04 — 25-position round black component shown obliquely; hollow triangular center and ribbed coupling ring. ECS Tuning; copyright watermark 2013
108 is explicitly25 POL on all three selected catalogs; distinct part from109and116. D 2.5 contact service families are printed alongside E34/E32 wiring housings.
Diagram designation and context: Unresolved
Positions / physical family25 · catalog 25-position BMW housing
Vehicle evidenceSelected catalog applications only; not an asserted E36 X20/X69 fitment
BMW / housing identityhousing: 61131387108; related_catalog_housing: 61131387109
ContactsRound contact geometry observed; exact metal terminal and wire-size selection requires the scoped part/claim evidence
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E34
Selected 525ix HJ81 EUR 03/1996
03/1996 catalog anchor Catalog snapshot
25-position 108/109 service housings and diagnostic shell 12521711218 appear in wiring-connections table Generic 20/25-position alternatives; no X20 label or guaranteed circuit assignment. Selected calendar/build context is not a verified model-year range.
E32
Selected 740i GD42 EUR 02/1994
02/1994 catalog anchor Catalog snapshot
108/109 service housings, D 2.5 terminal rows and diagnostic pieces listed No exact X20-to-housing photo join. Does not establish a complete production interval. Selected calendar/build context is not a verified model-year range.
Z3 E36/7
Selected CJ33 USA 09/1998 Z3 2.8 M52
09/1998 catalog anchor Catalog snapshot
108 and 116 distinct 25-POL housings; diagnostic housing 12521711218 also listed No X20/X69 assignment, no 116 mate, no complete model-wide range. Selected calendar/build context is not a verified model-year range.
Z3 E36/7
Z3 2.8 M52 ECE RHD February 1998
02/1998 catalog anchor Catalog snapshot
Same 108/116/diagnostic part list on independent catalog mirror A second mirror is not an independent physical measurement. Selected calendar/build context is not a verified model-year range.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
61131387108
25-position service housing
Catalog + dedicated SKU photo; circuit join unresolved Do not assign to pictured A03/A04 kits. Dedicated photo shows no readable molded number.
What still needs verification
Photo SKU identity is strong; mapping to a specific E36 X20 half remains unresolved. Do not infer E36 fit from E34/Z3 availability or use generic diagram orientation alone to label pin/socket side.
Chassis evidence: E34, E32. Scoped application evidence; confirm the model, engine and build details below.
E36-EP05 — Black 25-position counterpart, viewed from face/rear angle with flange and ribbed locking portions. ECS Tuning; copyright watermark 2013
109 appears as25 POL opposite 108 in selected E34 and E32 wiring-connection tables.
Diagram designation and context: Unresolved
Positions / physical family25 · catalog 25-position BMW housing
Vehicle evidenceSelected catalog applications only; not an asserted E36 X20/X69 fitment
BMW / housing identityhousing: 61131387109; related_catalog_housing: 61131387108
ContactsRound contact geometry observed; exact metal terminal and wire-size selection requires the scoped part/claim evidence
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E34
Selected 525ix HJ81 EUR 03/1996
03/1996 catalog anchor Catalog snapshot
25-position 108/109 service housings and diagnostic shell 12521711218 appear in wiring-connections table Generic 20/25-position alternatives; no X20 label or guaranteed circuit assignment. Selected calendar/build context is not a verified model-year range.
E32
Selected 740i GD42 EUR 02/1994
02/1994 catalog anchor Catalog snapshot
108/109 service housings, D 2.5 terminal rows and diagnostic pieces listed No exact X20-to-housing photo join. Does not establish a complete production interval. Selected calendar/build context is not a verified model-year range.
Chassis evidence: Z3. Scoped application evidence; confirm the model, engine and build details below.
E36-EP06 — Black 25-position housing from terminal-entry side; mating key is not visible from this angle. ECS Tuning; copyright watermark 2016
116 is cataloged 25 POL for selected Z3 M52 USA 09/1998 and ECE RHD 02/1998. Actual dedicated SKU photo inspected.
Diagram designation and context: Unresolved
Positions / physical family25 · catalog 25-position BMW housing
Vehicle evidenceSelected catalog applications only; not an asserted E36 X20/X69 fitment
BMW / housing identityhousing: 61131387116; adjacent_accessory: 61131387117 is a LOCK RING, not a mate; rubber_boot_lead: 12521724679 appears on same diagram
ContactsRound contact geometry observed; exact metal terminal and wire-size selection requires the scoped part/claim evidence
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
Z3 E36/7
Selected CJ33 USA 09/1998 Z3 2.8 M52
09/1998 catalog anchor Catalog snapshot
108 and 116 distinct 25-POL housings; diagnostic housing 12521711218 also listed No X20/X69 assignment, no 116 mate, no complete model-wide range. Selected calendar/build context is not a verified model-year range.
Z3 E36/7
Z3 2.8 M52 ECE RHD February 1998
02/1998 catalog anchor Catalog snapshot
Same 108/116/diagnostic part list on independent catalog mirror A second mirror is not an independent physical measurement. Selected calendar/build context is not a verified model-year range.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
61131387116
Z3 25-position service housing
Catalog + dedicated SKU photo; mate/key assignment unresolved Terminal-entry photo does not expose mating key. Do not infer X20/X69 assignment.
61131387117
Lock ring
Catalog-derived description Not a mating connector or a housing.
12521724679
Rubber boot; same Z3 diagram
Catalog lead; exact shell association unproven Appearing near108/116 in diagram does not prove fit on both; do not sell as an asserted kit BOM.
What still needs verification
No X20/X69 assignment confirmed. Rubber boot position on same illustration does not prove it serves every 25-position shell. Photo is terminal-entry view and cannot distinguish matingkey.
Chassis evidence: E39, E46, Z3, E53. Scoped application evidence; confirm the model, engine and build details below.
LATE-P-x60001 — X60001 individual Kit-0039 photograph Tulay's Wire Werks; watermark displayed; photographer and actual rights holder unconfirmed
X60001 is the 9-position power-supply module in the documented Siemens five-module family. The actual kit photo shows its insert and locking arrangement. Treat the module name, cap, insert and terminal as separate identifiers.
Vehicle evidenceBMW ST055 MS42/MS43 applications; selected E39 530i USA 06/2003 catalog; exact build range remains application-dependent
BMW / housing identityExact pictured housing part number unresolved unless individually recorded below.
ContactsFlat-contact system. TE 9-position candidate uses 2.8 mm tab interface; 24/40/52 candidates are MQS assemblies. This is separate from Falk 2.5 mm round contacts.
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E39 / E46 / Z3 / E53
MS42 M52TU and MS43 M54 as listed in ST055
MS42 1998–2000; MS43 2001 MY onward at training publication | Training publication scope; exact car build not identified Factory training scope
Five modular connectors; this row is X60001 with 9 positions No full production range, market-wide coverage or shared pinout asserted. E53 applies to MS43 M54 training scope.
E39
530i; DT63; USA; MS43
06/2003 Selected catalog snapshot
Catalog lists related service parts in DME assembly Catalog does not label X-numbers; mapping to this circuit remains an assembly join, not proof of photographed kit part number. Selected calendar/build context is not a verified model-year range.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
1-968307-2
Housing candidate
Manufacturer specification verified; BMW cross-reference unconfirmed Do not substitute cap/shield for a complete housing with inserts. Not proved to be the exact photographed kit.
12521744624
9-position socket insert
Catalog documented; photo join unconfirmed Requires separate cap 12527502456 in selected catalog.
12527502456
Covering cap
Catalog documented; photo join unconfirmed Catalog service component; not an X-number.
What still needs verification
Photographed kit identity has not been joined to a molded BMW/TE number on a sample.
Do not extrapolate circuit designation or pinout to N46/E8x/E9x; These X-numbers are reused with other pin counts and systems.
Chassis evidence: E39, E46, Z3, E53. Scoped application evidence; confirm the model, engine and build details below.
LATE-P-x60002 — X60002 individual Kit-0040 photograph Tulay's Wire Werks; watermark displayed; photographer and actual rights holder unconfirmed
X60002 is the 24-position peripheral module in the documented Siemens five-module family. The actual kit photo shows its insert and locking arrangement. Treat the module name, cap, insert and terminal as separate identifiers.
Vehicle evidenceBMW ST055 MS42/MS43 applications; selected E39 530i USA 06/2003 catalog; exact build range remains application-dependent
BMW / housing identityExact pictured housing part number unresolved unless individually recorded below.
ContactsFlat-contact system. TE 9-position candidate uses 2.8 mm tab interface; 24/40/52 candidates are MQS assemblies. This is separate from Falk 2.5 mm round contacts.
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E39 / E46 / Z3 / E53
MS42 M52TU and MS43 M54 as listed in ST055
MS42 1998–2000; MS43 2001 MY onward at training publication | Training publication scope; exact car build not identified Factory training scope
Five modular connectors; this row is X60002 with 24 positions No full production range, market-wide coverage or shared pinout asserted. E53 applies to MS43 M54 training scope.
E39
530i; DT63; USA; MS43
06/2003 Selected catalog snapshot
Catalog lists related service parts in DME assembly Catalog does not label X-numbers; mapping to this circuit remains an assembly join, not proof of photographed kit part number. Selected calendar/build context is not a verified model-year range.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
1-968317-3
Shield/cap candidate
Manufacturer specification verified; BMW cross-reference unconfirmed Do not substitute cap/shield for a complete housing with inserts. Not proved to be the exact photographed kit.
12521744626
Covering cap
Catalog documented; photo join unconfirmed Part of selected MS43 DME service assembly; no standalone complete-kit identity asserted.
12521744627
Socket insert A
Catalog documented; photo join unconfirmed Part of selected MS43 DME service assembly; no standalone complete-kit identity asserted.
12521744628
Socket insert B
Catalog documented; photo join unconfirmed Part of selected MS43 DME service assembly; no standalone complete-kit identity asserted.
What still needs verification
Photographed kit identity has not been joined to a molded BMW/TE number on a sample.
Do not extrapolate circuit designation or pinout to N46/E8x/E9x; These X-numbers are reused with other pin counts and systems.
Chassis evidence: E39, E46, Z3, E53. Scoped application evidence; confirm the model, engine and build details below.
LATE-P-x60003 — X60003 individual Kit-0041 photograph Tulay's Wire Werks; watermark displayed; photographer and actual rights holder unconfirmed
X60003 is the 52-position engine module in the documented Siemens five-module family. The actual kit photo shows its insert and locking arrangement. Treat the module name, cap, insert and terminal as separate identifiers.
Vehicle evidenceBMW ST055 MS42/MS43 applications; selected E39 530i USA 06/2003 catalog; exact build range remains application-dependent
BMW / housing identityExact pictured housing part number unresolved unless individually recorded below.
ContactsFlat-contact system. TE 9-position candidate uses 2.8 mm tab interface; 24/40/52 candidates are MQS assemblies. This is separate from Falk 2.5 mm round contacts.
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E39 / E46 / Z3 / E53
MS42 M52TU and MS43 M54 as listed in ST055
MS42 1998–2000; MS43 2001 MY onward at training publication | Training publication scope; exact car build not identified Factory training scope
Five modular connectors; this row is X60003 with 52 positions No full production range, market-wide coverage or shared pinout asserted. E53 applies to MS43 M54 training scope.
E39
530i; DT63; USA; MS43
06/2003 Selected catalog snapshot
Catalog lists related service parts in DME assembly Catalog does not label X-numbers; mapping to this circuit remains an assembly join, not proof of photographed kit part number. Selected calendar/build context is not a verified model-year range.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
1-968325-3
Shield/cap candidate
Manufacturer specification verified; BMW cross-reference unconfirmed Do not substitute cap/shield for a complete housing with inserts. Not proved to be the exact photographed kit.
12527526424
Covering cap
Catalog documented; photo join unconfirmed Part of selected MS43 DME service assembly. Cap supersession/date must be checked for an actual VIN.
12521744633
Socket insert A
Catalog documented; photo join unconfirmed Part of selected MS43 DME service assembly. Cap supersession/date must be checked for an actual VIN.
12521744634
Socket insert B
Catalog documented; photo join unconfirmed Part of selected MS43 DME service assembly. Cap supersession/date must be checked for an actual VIN.
What still needs verification
Photographed kit identity has not been joined to a molded BMW/TE number on a sample.
Do not extrapolate circuit designation or pinout to N46/E8x/E9x; These X-numbers are reused with other pin counts and systems.
Chassis evidence: E39, E46, Z3, E53. Scoped application evidence; confirm the model, engine and build details below.
LATE-P-x60004 — X60004 individual Kit-0016 photograph Tulay's Wire Werks; watermark displayed; photographer and actual rights holder unconfirmed
X60004 is the 40-position vehicle module in the documented Siemens five-module family. The actual kit photo shows its insert and locking arrangement. Treat the module name, cap, insert and terminal as separate identifiers.
Vehicle evidenceBMW ST055 MS42/MS43 applications; selected E39 530i USA 06/2003 catalog; exact build range remains application-dependent
BMW / housing identityExact pictured housing part number unresolved unless individually recorded below.
ContactsFlat-contact system. TE 9-position candidate uses 2.8 mm tab interface; 24/40/52 candidates are MQS assemblies. This is separate from Falk 2.5 mm round contacts.
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E39 / E46 / Z3 / E53
MS42 M52TU and MS43 M54 as listed in ST055
MS42 1998–2000; MS43 2001 MY onward at training publication | Training publication scope; exact car build not identified Factory training scope
Five modular connectors; this row is X60004 with 40 positions No full production range, market-wide coverage or shared pinout asserted. E53 applies to MS43 M54 training scope.
E39
530i; DT63; USA; MS43
06/2003 Selected catalog snapshot
Catalog lists related service parts in DME assembly Catalog does not label X-numbers; mapping to this circuit remains an assembly join, not proof of photographed kit part number. Selected calendar/build context is not a verified model-year range.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
1-968321-2
Shield/cap candidate
Manufacturer specification verified; BMW cross-reference unconfirmed Do not substitute cap/shield for a complete housing with inserts. Not proved to be the exact photographed kit.
12521744629
Covering cap
Catalog documented; photo join unconfirmed Two inserts are needed for the 40-position assembly; avoid ordering only its cap.
12521744630
Socket insert A
Catalog documented; photo join unconfirmed Two inserts are needed for the 40-position assembly; avoid ordering only its cap.
12521744631
Socket insert B
Catalog documented; photo join unconfirmed Two inserts are needed for the 40-position assembly; avoid ordering only its cap.
What still needs verification
Photographed kit identity has not been joined to a molded BMW/TE number on a sample.
Do not extrapolate circuit designation or pinout to N46/E8x/E9x; These X-numbers are reused with other pin counts and systems.
Chassis evidence: E39, E46, Z3, E53. Scoped application evidence; confirm the model, engine and build details below.
LATE-P-x60005 — X60005 individual Kit-0042 photograph Tulay's Wire Werks; watermark displayed; photographer and actual rights holder unconfirmed
X60005 is the 9-position ignition module in the documented Siemens five-module family. The actual kit photo shows its insert and locking arrangement. Treat the module name, cap, insert and terminal as separate identifiers.
Vehicle evidenceBMW ST055 MS42/MS43 applications; selected E39 530i USA 06/2003 catalog; exact build range remains application-dependent
BMW / housing identityExact pictured housing part number unresolved unless individually recorded below.
ContactsFlat-contact system. TE 9-position candidate uses 2.8 mm tab interface; 24/40/52 candidates are MQS assemblies. This is separate from Falk 2.5 mm round contacts.
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E39 / E46 / Z3 / E53
MS42 M52TU and MS43 M54 as listed in ST055
MS42 1998–2000; MS43 2001 MY onward at training publication | Training publication scope; exact car build not identified Factory training scope
Five modular connectors; this row is X60005 with 9 positions No full production range, market-wide coverage or shared pinout asserted. E53 applies to MS43 M54 training scope.
E39
530i; DT63; USA; MS43
06/2003 Selected catalog snapshot
Catalog lists related service parts in DME assembly Catalog does not label X-numbers; mapping to this circuit remains an assembly join, not proof of photographed kit part number. Selected calendar/build context is not a verified model-year range.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
2-968307-2
Housing candidate
Manufacturer specification verified; BMW cross-reference unconfirmed Do not substitute cap/shield for a complete housing with inserts. Not proved to be the exact photographed kit.
What still needs verification
Photographed kit identity has not been joined to a molded BMW/TE number on a sample.
Do not extrapolate circuit designation or pinout to N46/E8x/E9x; These X-numbers are reused with other pin counts and systems.
LATE-C-E46-X6011-8 / vehicle connector variant
X6011 / E46 MS43/MSS54 engine interface, black 8-position variant
Chassis evidence: E46. Scoped application evidence; confirm the model, engine and build details below.
LATE-P-e46-x6011-black — Kit-0087 actual kit Tulay's Wire Werks; watermark displayed; photographer and actual rights holder unconfirmed
Additional photographs (1)
LATE-P-e46-x6011-teal — Kit-0114 actual kit Tulay's Wire Werks; watermark displayed; photographer and actual rights holder unconfirmed
The black 8-position X6011 belongs to the MS43/MSS54 engine branches. A seller also offers a teal universal-key service mate; its color and keying should remain explicit.
Chassis evidence: E46. Scoped application evidence; confirm the model, engine and build details below.
LATE-P-e46-x6021-flat — Kit-0119 actual kit Tulay's Wire Werks; watermark displayed; photographer and actual rights holder unconfirmed
The flat-contact four-position X6021 must remain separate from the round-contact MS42 variant. Factory location pages confirm the connector count and engine branch; the seller photograph identifies the physical service kit.
BMW / housing identityExact pictured housing part number unresolved unless individually recorded below.
ContactsExact contact, plating, seal and wire combination requires a physical sample.
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E46
MS43 M54 / MSS54 S54
Not specified | No exact market/build date established Engine-specific factory WDS branch
4-position black transmission/chassis interface Flat-versus-round identification also uses the inspected seller kit; terminal part number remains unresolved.
What still needs verification
Exact production changeover is not established.
Seller page has a contradictory introductory sentence naming M52TU and X6053; its application list excludes M52TU/MS42. Keep corrected scope limited.
Chassis assignment: Seller-associated candidate; no chassis selector assignment. Browse by physical details and read the application limits.
LATE-P-e46-x6021-round — Kit-0057 actual kit Tulay's Wire Werks; watermark displayed; photographer and actual rights holder unconfirmed
A four-position round-contact kit is sold for the MS42/M52TU X6021 and differs visibly from the later flat-contact version. Keep terminal size and exact housing identity open.
Chassis evidence: E39. Scoped application evidence; confirm the model, engine and build details below.
LATE-P-e39-x6011-white — Kit-0088 actual kit Tulay's Wire Werks; watermark displayed; photographer and actual rights holder unconfirmed
Additional photographs (1)
LATE-P-E39-X6011-FACTORY — Factory in-car natural X6011 and black X6053 BMW AG; mirrored by Operation CHARM; photographer unknown
The natural 12-position MS43 engine interface is a separate E39 variant. A factory in-car photo names it and distinguishes the neighboring black X6053; the seller kit photograph exposes its round-cavity geometry.
X6031 is a circuit label reused for several housings. This photographed 18-position E46 variant belongs to the BMS46 branch; it is not the E36 round connector or the E60 paddle-shifter connector.
18-position black X6031 Catalog anchor does not establish all 318i cars, start/end dates, or M54 use. Selected calendar/build context is not a verified model-year range.
What still needs verification
Do not assign to M54 solely because a mirrored 325xi manual index includes this page.
BMW housing/terminal numbers and full model/build coverage unresolved.
Do not equate with E36 12-position or E60 12-position X6031.
The black 13-position EWS connector should be identified by system version and housing geometry. X1659 also appears on older yellow 15-position EWS arrangements.
MSS54 uses a five-position MAF connector in the engine-specific factory branch. The black/white seller kit photo shows the physical service geometry. X6207 also names three- and six-position variants elsewhere.
Chassis assignment: Seller-associated candidate; no chassis selector assignment. Browse by physical details and read the application limits.
LATE-P-M54-MAF3-ALT — Kit-0073 alternative 3-position MAF kit Tulay's Wire Werks; watermark displayed; photographer and actual rights holder unconfirmed
A common three-position service connector is sold for the MS43 MAF. The seller explicitly distinguishes it from its OEM Code I kit and warns that terminal and seal systems vary by manufacturer.
Diagram designation and context: X6207
Positions / physical family3 · sealed flat-contact / EV1-style service alternative
Vehicle evidenceE46 MS43 M54 factory 3-position circuit; photographed kit is seller service alternative
BMW / housing identityExact pictured housing part number unresolved unless individually recorded below.
ContactsExact contact, plating, seal and wire combination requires a physical sample.
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E46
MS43 M54 MAF
Not specified | Exact market/build dates unresolved Engine-specific factory WDS circuit plus seller service alternative
3-position black MAF circuit; photographed service alternative Not a verified OEM housing-to-terminal interchange.
What still needs verification
This is explicitly the alternative kit, not a verified original BMW housing.
The seller warns matching housings can use different terminals and seals; do not reuse original pins without identifying the manufacturer.
LATE-C-n52-water-pump / vehicle connector variant
X6035 / N52 electric coolant-pump 4-position connector
Chassis evidence: E90. Scoped application evidence; confirm the model, engine and build details below.
LATE-P-n52-water-pump — Kit-0118 actual kit Tulay's Wire Werks; watermark displayed; photographer and actual rights holder unconfirmed
N52 electric coolant-pump 4-position connector. The actual kit photograph identifies the service geometry; the selected N52 factory circuit independently shows all four numbered positions. Wider seller application lists remain unverified.
Vehicle evidenceSelected 2006 E90 325i sedan N52 circuit; broader E8x/E9x claims retained as seller-only
BMW / housing identityExact pictured housing part number unresolved unless individually recorded below.
ContactsExact contact, plating, seal and wire combination requires a physical sample.
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E90
325i sedan; N52 3.0L
2006 | Exact build date and explicit market not established Selected factory manual circuit
Four numbered X6035 connector positions Other chassis claims remain seller-only. Factory drawing local evidence: e90-water-electrical-04.png; direct image https://charm.li/images/IMP41Q313/euro89/320529211/
What still needs verification
Exact BMW housing part number and connector manufacturer not established.
No wholesale terms, physical mating, terminal retention or crimp qualification tested.
Seller pump assembly numbers are not connector housing numbers.
LATE-C-e9x-wiper / vehicle connector variant
X333 / E90 windshield-wiper motor 4-position connector
Chassis evidence: E90. Scoped application evidence; confirm the model, engine and build details below.
LATE-P-e9x-wiper — Kit-0071 actual kit Tulay's Wire Werks; watermark displayed; photographer and actual rights holder unconfirmed
E90 windshield-wiper motor 4-position connector. The actual kit photograph identifies the service geometry; the selected E90 factory circuit independently shows all four numbered positions. Wider seller application lists remain unverified.
Vehicle evidenceSelected 2006 E90 325i sedan N52 circuit; broader E8x/E9x claims retained as seller-only
BMW / housing identityExact pictured housing part number unresolved unless individually recorded below.
ContactsExact contact, plating, seal and wire combination requires a physical sample.
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E90
325i sedan; N52 3.0L
2006 | Exact build date and explicit market not established Selected factory manual circuit
Four numbered X333 connector positions Other chassis claims remain seller-only. Factory drawing local evidence: e90-wiper-electrical-04.png; direct image https://charm.li/images/IMP41Q313/euro89/1118275260/
What still needs verification
Exact BMW housing and terminal numbers unresolved.
E82/E88/E91/E92/E93 and E84 seller applications have not all received factory verification.
Same-looking pump kit includes different terminal/seal sizes; do not merge assortments.
SERVICE-C-993 / physical BMW service housing / repair kit
Six-position sealed MCON socket repair kit — BMW 61132359993
Chassis evidence: F22. Scoped application evidence; confirm the model, engine and build details below.
SERVICE-P-993 — Six-position sealed MCON socket repair kit — BMW 61132359993 ECS exact BMW product 61132359993
The six-cavity shell comes with seven contacts because a repair kit can contain a spare. Purple lock, perimeter seal and one row of cavities help distinguish it from other six-position BMW plugs.
Chassis evidence: F10. Scoped application evidence; confirm the model, engine and build details below.
SERVICE-P-994 — Four-position unsealed MQS socket repair kit — BMW 61132359994 ECS exact BMW product 61132359994
This small unsealed four-position socket is useful beyond one named circuit. The two terminal strips cover different wire sizes; the ten contacts do not make it a ten-position connector.
Diagram designation and context: Unresolved
Positions / physical family4 · MQS unsealed
Vehicle evidenceF10 520i XG16 EGY, selected catalog 08/2012, various switches position 02
BMW / housing identity61132359994
ContactsTwo MQS receptacle wire-range options, five of each in four-position kit. Separate repair leads 61130005197 / 61130056960 are catalog companions, not inferred pack contents.
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
F10
520i XG16 EGY
08/2012 Selected catalog context
Various switches position 02 four-position kit Selected context only; circuit code unassigned. Catalog-selected calendar/build dates are not verified model years.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
61132359994
Packaged socket repair kit
Catalog + actual photo Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61138380696
Universal uncoded four-position socket housing in kit
Kit component list + retailer supersession Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61131383776
MQS receptacle contact
Deduplicated BOM; photo five-contact strip Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61131393724
MQS receptacle contact
Deduplicated BOM; photo five-contact strip Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
What still needs verification
BimmerWorld calls it a male plug, while BMW BOM/contacts indicate socket contacts; retain explicit contact gender.
No single universal X-designation established.
SERVICE-C-997 / physical BMW service housing / repair kit
Three-position MLK/MCON sealed socket repair kit — BMW 61132359997
Chassis evidence: F32 LCI. Scoped application evidence; confirm the model, engine and build details below.
SERVICE-P-997 — Three-position MLK/MCON sealed socket repair kit — BMW 61132359997 EuroSport exact BMW product 61132359997
The three-position 997 and 998 kits are separate physical and terminal-system records. Count, turquoise color and a black shroud are insufficient to identify which one is needed.
Diagram designation and context: Unresolved
Positions / physical family3 · BMW MLK housing with MCON 1.2 ELA contacts
ContactsMCON 1.2 socket contacts 12527545858 / 12527545860. BMW names plastic shell MLK; do not translate that into a universal MQS/MCON equivalence.
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
F32 LCI
430i 4W33 USA
06/2020 Selected catalog context
Three-position 61132359997 under PDC option conditions S507A/S508A/S5DRA No sensor revision or exact X-number established. Catalog-selected calendar/build dates are not verified model years.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
61132359997
Packaged repair kit
Catalog + actual photo Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61136925599
Universal socket housing MLK uncoded
Kit list Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
12527545858
MCON 1.2 ELA socket contact
BOM + photo Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
12527545860
MCON 1.2 ELA socket contact
BOM + photo Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61138353705
Conductor seal
Deduplicated BOM + photo Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61138366245
Green conductor seal
Deduplicated BOM + photo Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61138366249
Dummy grommet
Deduplicated BOM + photo Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
What still needs verification
Specific PDC sensor variant/circuit mapping and original manufacturer full housing number unresolved.
SERVICE-C-998 / physical BMW service housing / repair kit
Three-position sealed MQS socket repair kit — BMW 61132359998
Chassis assignment: Not established for this photographed item. Browse by physical details and read the application limits.
SERVICE-P-998 — Three-position sealed MQS socket repair kit — BMW 61132359998 EuroSport exact BMW product 61132359998
The MQS version has eight repair contacts for three positions, covering two wire ranges. Identify the housing and its lock before choosing contacts.
Diagram designation and context: Unresolved
Positions / physical family3 · MQS ELA
Vehicle evidenceF31 328dX 3K53 USA repair-kit diagram; build date/circuit unresolved
BMW / housing identity61132359998
ContactsBMW MQS ELA contacts. TE drawing family 967642 permits contact base drawings 962885 (0.2–0.5) / 965906 (0.75); exact BMW/full TE suffix cross-map remains unproven.
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
F31
328dX 3K53 USA
not established Catalog model context
Three-position MQS repair-kit diagram Generic repair diagram does not prove a circuit/location.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
61132359998
Packaged repair kit
Catalog + actual photo Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61138365348
Universal uncoded three-position socket housing
Kit component list + photographed mold marking Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61131393704
MQS ELA socket contact
Deduplicated kit list Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61138366260
MQS ELA socket contact
Deduplicated kit list Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61138366245
Green conductor seal
BOM + photo Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61138366247
Conductor seal
BOM + photo Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61138366249
Dummy grommet
BOM + photo Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
What still needs verification
TE code-Z candidate 9-967642-1 is consistent with the water-blue insert; cross-map is a candidate, not a proven exact replacement.
Some sellers cross-reference black code-A 1-967642-1; TE drawing shows coding distinctions.
SERVICE-C-999 / physical BMW service housing / repair kit
Two-position sealed MQS expansion-tank socket kit — BMW 61132359999
Chassis evidence: E81. Scoped application evidence; confirm the model, engine and build details below.
SERVICE-P-999 — Two-position sealed MQS expansion-tank socket kit — BMW 61132359999 BMW UK expansion-tank socket repair kit 61132359999
BMW supplies this as an expansion-tank socket repair kit. Its grey shell and white lock are worth recording because generic MQS product photos can show different coding and cover colors.
ContactsMQS ELA receptacles. BMW separately lists silver repair lead 61130056961 (0.35–0.5 mm²); pack contacts are catalogued SN, so do not equate repair lead to the included bare terminal.
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E81
116d UK51 N47 ECE
11/2008–02/2010 BMW first-party applicability-matrix row
BMW UK lists this model/date row for expansion-tank socket repair kit One BMW shop applicability row, not a blanket engine/chassis range.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
61132359999
Packaged repair kit
BMW first-party listing + actual photo Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61138365340
Universal uncoded two-position socket housing
Kit component list Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61131393704
MQS ELA socket contact
Deduplicated BOM + photo count Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61138366260
MQS ELA socket contact
Deduplicated BOM + photo count Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61138366245
Green conductor seal
BOM + photo count Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61138366247
Conductor seal
BOM + photo count Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
What still needs verification
No exact X-number established.
Manufacturer 1-967644-1 retailer cross-references do not prove identity: TE drawing distinguishes A/Z versions and photographed BMW lock/cover colors differ.
SERVICE-C-498 / physical BMW service housing / repair kit
Grey two-position JPT ELA lamp socket housing — BMW 61138364498
Chassis evidence: E46. Scoped application evidence; confirm the model, engine and build details below.
SERVICE-P-498 — Grey two-position JPT ELA lamp socket housing — BMW 61138364498 EuroSport 61138364498 actual housing photo
The grey shell with a blue lock is a useful physical identifier. Buy contacts and seals according to the actual lamp connector and wire size; the housing listing alone supplies neither wires nor terminals.
Diagram designation and context: Unresolved
Positions / physical family2 · JPT ELA by selected BMW catalog association
Chassis evidence: G05. Scoped application evidence; confirm the model, engine and build details below.
SERVICE-P-583 — Two-position unsealed MQS pin housing — BMW 61138373583 Pantri exact BMW housing 61138373583
A BMW catalog can call this whole plastic shell a pin terminal. The archive records it as a housing for pin contacts so that a supplier quote does not substitute one metal pin for the connector.
Chassis evidence: E60. Scoped application evidence; confirm the model, engine and build details below.
SERVICE-P-624 — Eight-position sealed MQS socket housing — BMW 61138364624 ECS exact BMW product 61138364624
The eight wire-entry wells are a useful count check. This service shell appears beside ACC hardware in the selected catalog, but that table alone does not make every E60 M5 an ACC-equipped car.
Diagram designation and context: Unresolved
Positions / physical family8 · MQS ELA
Vehicle evidenceE60 M5 NB93 USA selected 12/2009 ACC-sensor catalog position 08; options/installation not audited
BMW / housing identity61138364624
ContactsCatalog distinguishes tin and gold terminal variants. A matching shell does not settle required plating.
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E60
M5 NB93 USA
12/2009 Selected catalog context
ACC-sensor table position 08 eight-pole MQS shell Option equipment and actual installation not audited; no all-M5 claim. Catalog-selected calendar/build dates are not verified model years.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
61138364624
Universal uncoded eight-position socket housing
BMW catalog table + actual photo Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61131393704
MQS ELA socket contact
Selected ACC catalog companion Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61131393726
MQS socket contact
Selected ACC catalog companion Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
What still needs verification
Exact original manufacturer assembly number and mate unresolved.
Need front face/side/marking photographs and VIN-specific circuit location for stronger vehicle mapping.
SERVICE-C-632 / physical BMW service housing / repair kit
Twelve-position sealed MQS socket housing — BMW 61138373632
Chassis evidence: G06. Scoped application evidence; confirm the model, engine and build details below.
SERVICE-P-632 — Twelve-position sealed MQS socket housing — BMW 61138373632 ECS exact BMW product 61138373632
This twelve-position shell is a useful example of the difference between cavity count and populated wires. The selected front-end connection lists ten repair leads and two blanks.
Diagram designation and context: Unresolved
Positions / physical family12 · MQS ELA
Vehicle evidenceG06 X6 40iX CY63 USA: X149*1B front-end left catalog connection; build date not established
BMW / housing identity61138373632
ContactsMQS ELA socket repair leads in selected catalog. Position count twelve; selected repair recipe uses ten leads and two cavity plugs.
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
G06
X6 40iX CY63 USA
not established Catalog component-code context
X149*1B front-end left twelve-pole socket; ten repair leads plus two plugs 06/2018 URL token not accepted as independently verified build date.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
61138373632
Universal uncoded twelve-position socket housing
Catalog + actual photo Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61138373630
Earlier service housing number
Retailer + catalog cross-reference; not an additional photographed revision Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61138387220
Twelve-position pin housing at X149*1S
Catalog companion; mate geometry not physically tested Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61130085034
MQS ELA receptacle repair lead
Catalog repair recipe, not pack contents Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61138366249
Cavity plug
Catalog repair recipe, not pack contents Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
What still needs verification
TE 1-967680-1 appears in aftermarket cross-reference leads, but primary BMW-to-TE proof not secured.
Treat supersession as a service relationship; do not claim all molded revisions are visually identical.
SERVICE-C-842 / physical BMW service housing / repair kit
Five-position hybrid MQS / ELO-Power socket housing — BMW 61136901842
Chassis evidence: E92, G12. Scoped application evidence; confirm the model, engine and build details below.
SERVICE-P-842 — Five-position hybrid MQS / ELO-Power socket housing — BMW 61136901842 Pantri exact BMW housing 61136901842
Five positions do not mean five of one terminal. The actual face has two small cavities and three larger ones, matching the catalog's mixed MQS/ELO contact list.
ContactsHybrid terminal system: MQS and ELO-Power contacts. The source lists alternatives for wire range, not a universal set of five identical terminals.
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E92
335i WB73 USA N54
15/09/2006 Public VIN-derived catalog snapshot
Control-units table lists five-position housing with MQS/ELO alternatives Single selected vehicle context; no complete year range. Catalog-selected calendar/build dates are not verified model years.
G12
750LiX 4.4 7F21 ECE N63R
not established Catalog component-code context
A387*3B driver armrest-heating electronics and A390*3B rear passenger electronics Exact cavity population must follow applicable wiring/repair information.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
61136901842
Five-position hybrid socket housing
Catalog + actual two-small/three-large cavity photo Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61131383776
MQS socket contact
E92 catalog companion Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61131393724
MQS socket contact
E92 catalog companion Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61138364832
ELO-Power 2.8 x 0.63 socket contact
E92 catalog companion Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61138364834
ELO-Power 2.8 x 0.63 socket contact
E92 catalog companion Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61138377162
ELO-Power 2.8 x 0.63 socket contact
E92 catalog companion Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
What still needs verification
Cavity-to-contact and per-vehicle wire-range/plating assignment require the applicable wiring and repair instructions.
No bare-terminal crimp tool or Falk interchange qualified.
SERVICE-C-410 / physical BMW service housing / repair kit
Three-position straight 2.5 mm socket housing — BMW 61131378410
Chassis evidence: E36. Scoped application evidence; confirm the model, engine and build details below.
SERVICE-P-410 — Three-position straight 2.5 mm socket housing — BMW 61131378410 Rob Siegel fan-switch connector comparison, 12 March 2025
The replacement shell can preserve a familiar BMW number while changing the way terminals enter and lock. The straight shell and the earlier angular-cap shell need separate visual records.
Diagram designation and context: Unresolved
Positions / physical family3 · BMW round 2.5 mm contacts, small service shell
Vehicle evidenceE36 318ti CG73 USA selected 07/1995 water-valve/hose table; independent E30 fan-switch repair example without factory build scope
BMW / housing identity61131378410
ContactsStraight 2.5 mm receptacles. Original right-angle 61130007445 / 61130007446 contacts do not automatically fit this supplied shell.
Inspect the application evidence
Chassis
Model / scope
Date type
Limits / source
E36
318ti CG73 USA
07/1995 Selected catalog context
Water-valve/hose position 11 with three straight watertight 2.5 receptacle leads Legacy illustration is not proof of current shell revision. Catalog-selected calendar/build dates are not verified model years.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
61131378410
Straight three-position plug/socket housing
Catalog + retailer + independent hands-on photos Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61130007441
Watertight 2.5 socket repair lead
Selected E36 catalog companion; listed ended Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61130007442
Straight 2.5 socket repair lead
Independent repair-report lead; verify current BMW spec before ordering Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
What still needs verification
Do not copy a legacy catalog illustration to identify the shell now in the bag.
C113 assignment in community posts is not promoted to a verified designation here.
Chassis assignment: Not established for this photographed item. Browse by physical details and read the application limits.
SERVICE-P-412 — Historical three-position angular 2.5 mm housing — BMW 61131378412 Rob Siegel fan-switch connector comparison, 12 March 2025
The round rear cap is more than a cosmetic difference: it provides space for angular terminals. This historical entry documents that form; it does not promise present BMW availability or certify a reproduction.
Diagram designation and context: Unresolved
Positions / physical family3 · BMW round 2.5 mm angled-contact service shell
Vehicle evidenceHistorical physical housing identification; independent E30 auxiliary fan-switch repair case; no factory model/build-year range established
BMW / housing identity61131378412
ContactsAngular 2.5 mm receptacles; separate round cap and molded troughs distinguish it from the currently supplied straight shell.
Housing and repair-part evidence
Exact number
Role
Evidence and limits
61131378412
Historical angular three-position housing with separate rear cap
Exact-number historical retailer photograph; factory catalog join unresolved Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61130007445
Angled 2.5 socket repair lead
Independent hands-on repair report; not validated new production supply Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
61130007446
Angled 2.5 socket repair lead
Community corroboration; manufacturer specification unresolved Service number and physical role kept separate; contents/fitment claims limited to cited evidence.
What still needs verification
Reader entry is explicitly historical. Factory ETK build/application anchor and original manufacturer number remain unresolved.
NLA claim is dated March 2025 screenshot only; no current supplier stock confirmed.
E30 / Motronic / 35-position reference
Early E30 Motronic 35-position ECU harness connection
Licensed installed-view photograph
Chassis evidence: selected E30 references; model, market and control-unit version matter.
Early E30 Motronic ECU with harness plug attached. The photographer describes an E30 325 without catalytic converter. This view shows the plug body, cable exit and retaining clip; the mating face is hidden. Mib18 · CC BY-SA 3.0 · image unchanged.
Positions: 35 for the documented interface. Context: Photographer’s E30 325 without-catalyst example, captioned 1985. The ECU label is Bosch 0 261 200 081; it is not a connector housing number. Factory NA1986 325 and NA1989 M3 references separately document 35-position Motronic interfaces. Housing / terminal part numbers: not established for the photographed assembly.
Factory connector view: printed page 8500-4 in the 1986 NA325 ETM (PDF page 117). The photographed 0 261 200 081 controller is independently documented as a 35-pin Motronic.
Early 35-position Motronic family. An identical position count does not establish interchange between early six-cylinder and M3 harnesses, ECUs or pin assignments.
Photo limit: installed/rear view only; compare the mating face and keying before ordering. No exact current Falk housing, contact or crimper match is established for this ECU interface. The round C101 range is not a confirmed match.
E30 / Motronic / 55-position reference
E30 Motronic 55-position ECU harness connection
Licensed installed-view photograph
Chassis evidence: selected E30 references; model, market and control-unit version matter.
Motronic harness connector retained in a Megasquirt conversion on a UK-spec 1989 325i. The black backshell and metal retainer are visible at the top; the contact face is hidden. This is a modified installation. Stuorguk~enwikibooks at English Wikibooks · CC BY-SA 3.0 · image unchanged.
Positions: 55 for the documented interface. Context: Factory NA1989 325i/325is ETM documents this 55-position interface in its all-except-M3 scope. The photograph separately shows the retained harness plug in a UK-spec 1989 325i Megasquirt conversion. Housing / terminal part numbers: not established for the photographed assembly.
Factory connector view: printed page 8500-5 in the 1989 NA325i/325is ETM (PDF page 137). The manual separately depicts an M3 35-position interface; do not generalize one count to every E30.
Later M20 Motronic 55-position family. Exact M1.1-to-M1.3 changeover dates and every-market applications are not established by this entry.
Photo limit: installed/rear view only; compare the mating face and keying before ordering. The 55-position photograph shows a modified installation, not a factory ECU configuration. No exact current Falk housing, contact or crimper match is established for this ECU interface. The round C101 range is not a confirmed match.
Existing Falk housing families
These entries identify the actual offered physical products. Their exact BMW circuit designations and factory application boundaries are still being researched.
The separate EV1 injector spring clips are not replacements for the wire-bail retainer on this pictured housing.
The 2-position face, rear entry and locking details can be compared with the photographs. This is an offered housing family, not a verified promise for every BMW chassis mentioned in older marketing copy.
The 3-position face, rear entry and locking details can be compared with the photographs. This is an offered housing family, not a verified promise for every BMW chassis mentioned in older marketing copy.
For serviceable housings. The tool does not remove heat-staked obstructions.
The 4-position face, rear entry and locking details can be compared with the photographs. This is an offered housing family, not a verified promise for every BMW chassis mentioned in older marketing copy.
For serviceable housings. The tool does not remove heat-staked obstructions.
The 5-position face, rear entry and locking details can be compared with the photographs. This is an offered housing family, not a verified promise for every BMW chassis mentioned in older marketing copy.
Offered kit contents: Per connector: housing, 5 terminals, 5 seals and one rear weather boot. No male mate or wire.
What still needs verification
Exact manufacturer/housing number, keying-specific BMW application and terminal/seal specifications remain to verify.
EV1 injector interface / retention reference
Bosch EV1-style injector connection and spring clip
Photographed Falk clip application
Application: match the injector interface and clip profile. No universal BMW chassis/year fit is claimed.
Falk’s annotated injector-side EV1 reference. The two electrical blades are visible; this is the injector side, not a complete harness housing offered for sale.
Clip photograph and incompatible retainer comparison
The actual offered accessory: replacement spring clips.Falk explicitly excludes this wire-bail housing from the standalone clip fit. A shared two-position count does not establish the same retention hardware.
Replace a missing injector connector clip
Compare the spring profile and the injector/harness interface with the product photographs. The electrical connector clip is different from the clip that secures an injector to the fuel rail.
Spring clips only. Housings, injectors and wiring are not included. Falk lists compatible-housing applications across several BMW chassis; that does not establish every engine, year or connector variant.
Positions: two electrical blades on the pictured EV1 injector side. Housing number / vehicle circuit designation: not established for this photographed example. Selection: compare keying, mating interface and spring retention. Do not infer AF02 clip compatibility or an ECU connector from the EV1 name.
A 2.5 mm round contact is a family, not one interchangeable part
In the round-contact entries, 2.5 mm describes the nominal mating diameter. It is not the conductor cross-section and it is not a promise that a terminal will fit every round BMW shell. The crimp barrel still has to suit the wire, and the contact still has to retain correctly in the housing.
Original manufacturer data distinguishes sealed and unsealed round contacts even when their nominal mating diameter is the same. It also separates conductor ranges, insulation diameters and plating variants. A terminal intended to support a single-wire seal must be identified at that level; a matching diameter alone cannot establish a sealed repair.
The Falk round-contact products are useful starting points for a confirmed match. Their retail gauge options are not a substitute for the exact supplier drawing when introducing a new contact or housing. Until that combination has been checked, the archive treats a manufacturer alternative as a candidate and keeps it separate from a verified replacement.
Tool selection follows the exact terminal as well. A crimper's broad wire range does not establish the correct finished crimp for every barrel and seal design. New supply sources should be qualified with the specified die, wire, seal and housing before being described as interchangeable in a repair kit.
Keep the flat-contact housing families separate
The familiar Bosch-style sensor and injector housings are a separate branch of the archive. Their flat contacts, retaining clips, keys, boots and seals need their own comparisons. A two-position connector and a three-position connector should not inherit an application simply because both appear on an older BMW engine.
Falk already offers several position counts in this area. The archive will connect those products to specific photographed applications as the factory and physical evidence becomes available. Until then, the position count and visible geometry identify the offered family, while the exact X-number and BMW service cross-reference remain open.
Existing housings also differ in how they retain their contacts. The Falk disassembly guide documents examples with heat-staked obstructions. A matching release tool does not make every old housing serviceable, so the article links identification and service information without promising that every connector can be depinned in the same way.
From a visual match to a complete repair kit
Once the housing is identified, use the entry's parts list to distinguish the shell from the pieces needed to assemble it. A complete kit may need the mating half, secondary lock, coupling ring, cover or boot, wire seals, cavity plugs and more than one contact size. A low price for a bare housing is not the price of a ready-to-use repair.
The archive links the relevant Falk contacts and tools when the physical combination is supported. Where a product listing provides only a family-level compatibility claim, that limitation remains visible in the research record. Electrical pinouts belong to the exact vehicle diagrams, even when two shells mate perfectly.
For restoration, a current genuine service housing may be the clearest reference sample. A reproduction can be useful when the original is unavailable, but it needs its own identity, photographs and validation. Changing to an unrelated connector family is a different modification and should not be presented as an original-fit replacement.
Help document the next connector
Useful photographs show both mating faces straight on, the side and rear of the shell, its locking mechanism and any molded marks. Include a ruler or another clear dimensional reference, keep the key orientation consistent, and avoid covering the cavities with a finger or wire bundle. A separate close-up of an original contact is valuable.
The vehicle information matters just as much: chassis and body style, model, engine, transmission, market, production month and connector location. If the harness has been swapped or replaced, include the donor details where known. A photo with a verifiable identity is much more useful than a connector nickname on its own.
For any contributed photograph, the archive also needs permission from the rights holder to publish it, crop it and use it in this commercial reference. The research viewer identifies external sources; it does not treat a visible online image as a publication license. New original photographs of reference samples will make the finished archive more consistent and easier to use.
How the archive grows
New entries are added when a matching photograph and useful identification evidence are available. Each entry keeps circuit designations, housing numbers and repair parts separate, with application limits visible.
Read the application and parts information within each tile before ordering. Send a correction or an original photograph when you can help close a gap.
About this reference
Connector identities and application limits are recorded in each entry. Falk maintains the underlying diagrams, catalog references and supplier research separately as this archive grows.
Images and source credits
The identification examples use physical connector photographs with their families named. Existing archive photographs retain source credits and watermarks. Photographic provenance and reuse-clearance gaps remain recorded in Falk’s research files; hosting or linking an image does not establish ownership.
See an inaccuracy?
Report inaccuracies by emailing info@falkmfg.com. Include the connector name or entry number, chassis, model year, engine and the detail you think needs correcting. A source link or a clear explanation helps us check it.
Have photos to help clarify an entry? Email them to info@falkmfg.com with the entry number and a short description. Please send photos you took yourself or have permission to share, and tell us whether we may publish them in this archive and how you would like to be credited. Avoid including a full VIN, license plate or other personal details.
Reader reports help improve the archive; verify the connector on your own vehicle before ordering parts or changing wiring.
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