{"product_id":"4-pin-bosch-style-female-connector-kit","title":"4 Pin BOSCH Style Female Connector Kit","description":"\u003cp\u003e\u003cstrong\u003e4-pin Bosch-style female connector kit for wiring-harness repair and custom engine wiring.\u003c\/strong\u003e 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFemale connector only. No rubber boot or mating male connector is included.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eWhat's included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eEach connector kit: 1 female 4-pin housing with retaining clip, 4 female crimp terminals and 4 individual wire seals.\u003c\/li\u003e\n\u003cli\u003e1-pack: 1 housing, 4 terminals and 4 seals.\u003c\/li\u003e\n\u003cli\u003e3-pack: 3 housings, 12 terminals and 12 seals.\u003c\/li\u003e\n\u003cli\u003e5-pack: 5 housings, 20 terminals and 20 seals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSupplied unassembled and without wire. Individual wire seals are included; a rear rubber boot is not.\u003c\/p\u003e\n\u003cstyle\u003e\ndetails.falk-fitment \u003e summary { display:flex; align-items:center; justify-content:space-between; gap:16px; list-style:none; padding:8px; border-radius:4px; transition:background-color .18s ease; }\ndetails.falk-fitment \u003e summary::-webkit-details-marker { display:none; }\ndetails.falk-fitment \u003e summary::marker { content:\"\"; }\ndetails.falk-fitment \u003e summary:hover { background-color:rgba(128,128,128,.15); }\ndetails.falk-fitment \u003e summary:focus-visible { outline:2px solid currentColor; outline-offset:4px; }\ndetails.falk-fitment .falk-fitment-hint { display:block; margin-top:4px; font-size:.8em; font-weight:400; }\ndetails.falk-fitment .falk-fitment-close { display:none; }\ndetails.falk-fitment[open] .falk-fitment-expand { display:none; }\ndetails.falk-fitment[open] .falk-fitment-close { display:inline; }\ndetails.falk-fitment .falk-fitment-arrow { position:relative; display:block; flex:0 0 20px; width:20px; height:20px; margin:0 4px; font-size:0; opacity:.85; }\ndetails.falk-fitment .falk-fitment-arrow::before, details.falk-fitment .falk-fitment-arrow::after { content:\"\"; position:absolute; top:9px; left:2px; width:16px; height:2px; border-radius:1px; background:currentColor; }\ndetails.falk-fitment .falk-fitment-arrow::after { top:2px; left:9px; width:2px; height:16px; transition:opacity .15s ease; }\ndetails.falk-fitment[open] .falk-fitment-arrow::after { opacity:0; }\ndetails.falk-fitment \u003e summary:hover .falk-fitment-arrow { opacity:1; }\n@media (prefers-reduced-motion:reduce) { details.falk-fitment \u003e summary, details.falk-fitment .falk-fitment-arrow::after { transition:none; } }\n\u003c\/style\u003e\n\u003cdetails class=\"falk-fitment\" style=\"margin:16px 0;border:1px solid currentColor;border-radius:6px;padding:12px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:700;\"\u003e\u003cspan\u003eBMW compatibility chart: 4-pin applications and connector selection\u003cspan class=\"falk-fitment-hint\"\u003e\u003cspan class=\"falk-fitment-expand\"\u003eClick to expand\u003c\/span\u003e\u003cspan class=\"falk-fitment-close\"\u003eClick to collapse\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"falk-fitment-arrow\" aria-hidden=\"true\"\u003e+\u003c\/span\u003e\u003c\/summary\u003e\u003cp\u003eThis 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.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;margin-top:12px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:0.9em;\"\u003e\n\u003ccaption style=\"text-align:left;padding-bottom:8px;\"\u003eApplication references for connector selection\u003c\/caption\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\" style=\"text-align:left;padding:8px;border-bottom:1px solid currentColor;\"\u003eBMW model \/ application\u003c\/th\u003e\n\u003cth scope=\"col\" style=\"text-align:left;padding:8px;border-bottom:1px solid currentColor;\"\u003eReference year(s)\u003c\/th\u003e\n\u003cth scope=\"col\" style=\"text-align:left;padding:8px;border-bottom:1px solid currentColor;\"\u003eConnector selection\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"text-align:left;vertical-align:top;padding:8px;border-bottom:1px solid currentColor;\"\u003eBMW custom wiring: E28, E30, E36 and E46 projects\u003c\/th\u003e\n\u003ctd style=\"text-align:left;vertical-align:top;padding:8px;border-bottom:1px solid currentColor;\"\u003eProject-dependent\u003c\/td\u003e\n\u003ctd style=\"text-align:left;vertical-align:top;padding:8px;border-bottom:1px solid currentColor;\"\u003eUse 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.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"text-align:left;vertical-align:top;padding:8px;border-bottom:1px solid currentColor;\"\u003eFour-channel Bosch-style ignition-module wiring\u003c\/th\u003e\n\u003ctd style=\"text-align:left;vertical-align:top;padding:8px;border-bottom:1px solid currentColor;\"\u003eConversion-dependent\u003c\/td\u003e\n\u003ctd style=\"text-align:left;vertical-align:top;padding:8px;border-bottom:1px solid currentColor;\"\u003eSome modules use separate 4-position coil-side and 5-position ECU-side plugs. Check your module's connector drawing and keying.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"text-align:left;vertical-align:top;padding:8px;border-bottom:1px solid currentColor;\"\u003eE30 AFM references, including S14 M3\u003c\/th\u003e\n\u003ctd style=\"text-align:left;vertical-align:top;padding:8px;border-bottom:1px solid currentColor;\"\u003e1987; 325i also 1989\u003c\/td\u003e\n\u003ctd style=\"text-align:left;vertical-align:top;padding:8px;border-bottom:1px solid currentColor;\"\u003eThe reviewed BMW drawings show a five-position AFM housing. Compare the 5-pin kit for those applications.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"text-align:left;vertical-align:top;padding:8px;border-bottom:1px solid currentColor;\"\u003eE28 \/ E24 AFM references\u003c\/th\u003e\n\u003ctd style=\"text-align:left;vertical-align:top;padding:8px;border-bottom:1px solid currentColor;\"\u003e1988 E28; 1989 E24\u003c\/td\u003e\n\u003ctd style=\"text-align:left;vertical-align:top;padding:8px;border-bottom:1px solid currentColor;\"\u003eThe reviewed housings have five positions. Four populated wires do not make these four-position plugs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eWorking on an AFM with a five-position housing?\u003c\/strong\u003e See our \u003ca href=\"https:\/\/falkmfg.com\/products\/5-pin-bosch-style-female-connector-kit\"\u003e5-pin Bosch-style female connector kit\u003c\/a\u003e. Four wires in a five-position housing still require the five-position housing.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.haltech.com\/wp-admin\/admin-ajax.php?action=ht_get_file\u0026amp;id=5d240429ee9bb80d5f12a782\u0026amp;op=1\" target=\"_blank\" rel=\"noopener\"\u003eHaltech's four-channel ignition-module connector drawing\u003c\/a\u003e 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.\u003c\/p\u003e\n\u003cp style=\"font-size:0.85em;margin:12px 0 0;\"\u003eBMW application references: \u003ca href=\"https:\/\/www.armchair.mb.ca\/~dave\/BMW\/e30\/e30_87.pdf#page=162\" target=\"_blank\" rel=\"noopener\"\u003e1987 E30 ETM, 8500-3\u003c\/a\u003e; \u003ca href=\"https:\/\/www.armchair.mb.ca\/~dave\/BMW\/e30\/e30_89.pdf#page=134\" target=\"_blank\" rel=\"noopener\"\u003e1989 E30 ETM, 8500-2\u003c\/a\u003e; \u003ca href=\"https:\/\/www.armchair.mb.ca\/~dave\/BMW\/e30\/e30m3_87.pdf#page=114\" target=\"_blank\" rel=\"noopener\"\u003e1987 E30 M3 ETM, 8500-2\u003c\/a\u003e; \u003ca href=\"https:\/\/www.armchair.mb.ca\/~dave\/BMW\/e28\/e28_88.pdf#page=158\" target=\"_blank\" rel=\"noopener\"\u003e1988 E28 ETM, 8500-3\u003c\/a\u003e; \u003ca href=\"https:\/\/www.armchair.mb.ca\/~dave\/BMW\/e24\/e24_89.pdf#page=156\" target=\"_blank\" rel=\"noopener\"\u003e1989 E24 ETM, 8500-2\u003c\/a\u003e. 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.\u003c\/p\u003e\u003c\/details\u003e\n\u003ch2\u003eCheck your connector before ordering\u003c\/h2\u003e\n\u003cp\u003eCompare 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.\u003c\/p\u003e\n\u003ch2\u003eBMW wiring repair and harness projects\u003c\/h2\u003e\u003cp\u003eBuilding 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 \u003ca href=\"https:\/\/falkmfg.com\/products\/bmw-custom-wire-harness\"\u003ecustom BMW wire harness service\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eCrimping and terminal removal\u003c\/h2\u003e\n\u003cp\u003eUse 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.\u003c\/p\u003e\n\u003cp\u003eNeed to remove terminals? See our \u003ca href=\"https:\/\/falkmfg.com\/products\/bosh-style-connector-de-pin-tool\"\u003eBosch Style Connector De-pin Tool\u003c\/a\u003e and \u003ca href=\"https:\/\/falkmfg.com\/blogs\/news\/how-to-de-pin-bmw-bosch-2-3-4-and-5-pin-connectors\"\u003e2-, 3-, 4- and 5-pin connector depinning guide\u003c\/a\u003e. Some factory connectors are permanently locked and must be replaced rather than depinned.\u003c\/p\u003e\n\u003ch2\u003eOther connector sizes\u003c\/h2\u003e\n\u003cp\u003eAlso available: \u003ca href=\"https:\/\/falkmfg.com\/products\/2-pin-bosch-style-connector-for-bmw-e30-e36\"\u003e2-pin Bosch-style connectors\u003c\/a\u003e, \u003ca href=\"https:\/\/falkmfg.com\/products\/3-pin-bosch-style-connector-e30-e34-e36\"\u003e3-pin Bosch-style connectors\u003c\/a\u003e and \u003ca href=\"https:\/\/falkmfg.com\/products\/5-pin-bosch-style-female-connector-kit\"\u003e5-pin female connector kits\u003c\/a\u003e.\u003c\/p\u003e","brand":"Falk MFG","offers":[{"title":"1-Pack","offer_id":67723912708274,"sku":"EV_4PIN_FEMALE_1PK","price":11.99,"currency_code":"USD","in_stock":true},{"title":"3-Pack","offer_id":67723912741042,"sku":"EV_4PIN_FEMALE_3PK","price":32.99,"currency_code":"USD","in_stock":true},{"title":"5-Pack","offer_id":67723912773810,"sku":"EV_4PIN_FEMALE_5PK","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0423\/2717\/9417\/files\/bosch-4-1-white-background.png?v=1792069183","url":"https:\/\/falkmfg.com\/products\/4-pin-bosch-style-female-connector-kit","provider":"Falk MFG","version":"1.0","type":"link"}