4 Pin BOSCH Style Female Connector Kit

Name: 4 Pin BOSCH Style Female Connector Kit
Brand: Falk MFG
SKU: EV_4PIN_FEMALE_1PK
Price: 11.99 USD
Availability: InStock

$11.99 USD

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Pack Size 1-Pack 3-Pack 5-Pack

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4-pin Bosch-style female connector kit for wiring-harness repair and custom engine wiring. Rebuild a matching rectangular four-position connection with a fresh housing, female crimp terminals and individual wire seals. Useful for BMW harness projects and standalone ECU installations where the installed component uses this exact connector shape.

Female connector only. No rubber boot or mating male connector is included.

What's included

Each connector kit: 1 female 4-pin housing with retaining clip, 4 female crimp terminals and 4 individual wire seals.
1-pack: 1 housing, 4 terminals and 4 seals.
3-pack: 3 housings, 12 terminals and 12 seals.
5-pack: 5 housings, 20 terminals and 20 seals.

Supplied unassembled and without wire. Individual wire seals are included; a rear rubber boot is not.

BMW compatibility chart: 4-pin applications and connector selectionClick to expandClick to collapse

This kit is selected by the component's four-position connector, rather than a BMW chassis code alone. Use the guide below when planning a repair, engine swap or standalone ECU harness.

Application references for connector selection
BMW model / application	Reference year(s)	Connector selection
BMW custom wiring: E28, E30, E36 and E46 projects	Project-dependent	Use where the installed component has a matching rectangular four-position Bosch-style connection. No factory model/year fitment has been established for this exact housing.
Four-channel Bosch-style ignition-module wiring	Conversion-dependent	Some modules use separate 4-position coil-side and 5-position ECU-side plugs. Check your module's connector drawing and keying.
E30 AFM references, including S14 M3	1987; 325i also 1989	The reviewed BMW drawings show a five-position AFM housing. Compare the 5-pin kit for those applications.
E28 / E24 AFM references	1988 E28; 1989 E24	The reviewed housings have five positions. Four populated wires do not make these four-position plugs.

Working on an AFM with a five-position housing? See our 5-pin Bosch-style female connector kit. Four wires in a five-position housing still require the five-position housing.

Haltech's four-channel ignition-module connector drawing illustrates the 4-position coil-side and 5-position ECU-side layouts. It is a connector-family reference, not confirmation that every module or keyway accepts this kit.

BMW application references: 1987 E30 ETM, 8500-3; 1989 E30 ETM, 8500-2; 1987 E30 M3 ETM, 8500-2; 1988 E28 ETM, 8500-3; 1989 E24 ETM, 8500-2. Years identify the manuals reviewed, not a continuous fitment range. These references establish the connector format used in those examples; verify the dimensions and keying of your original plug.

Check your connector before ordering

Compare the mating face, pin count, keying, latch and rear wire entry in our photos with your original connector. Pin count alone does not confirm fitment. Match the housing width, keying and retaining clip as well as the number of positions.

BMW wiring repair and harness projects

Building an E30, E28, E36 or E46 custom harness? Match this four-position plug to the component being installed. For connector extensions, sensor adapters or a harness built for your application, see our custom BMW wire harness service.

Crimping and terminal removal

Use an automotive open-barrel crimping tool suited to the supplied terminals and wire seals. Preserve your original pin positions when rebuilding the connection. The final gallery image shows a properly crimped terminal and seal as an assembly reference.

Need to remove terminals? See our Bosch Style Connector De-pin Tool and 2-, 3-, 4- and 5-pin connector depinning guide. Some factory connectors are permanently locked and must be replaced rather than depinned.