{"product_id":"bmw-3-pin-ignition-coil-connector-oem-0221504029-female-n52-n53-n54-n55","title":"BMW 3-Pin Ignition Coil Connector OEM 0221504029 – Female | N52 N53 N54 N55","description":"\u003ch2\u003eBMW 3-Pin Ignition Coil Wire Harness Connector – OEM 0221504029 | Female | N52 \/ N53 \/ N54 \/ N55\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eOEM 0221504029\u003c\/strong\u003e is a 3-pin female connector used in BMW ignition coil harnesses. This Bosch part number identifies the connector used on BMW’s N-series inline-6 engines — N52, N53, N54, and N55. The 3-pin configuration carries coil primary power, ignition trigger signal, and coil confirmation feedback circuits. Available bare or with 15cm pre-wired leads.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e 0221504029 (Bosch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePin count:\u003c\/strong\u003e 3-pin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGender:\u003c\/strong\u003e Female\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHousing material:\u003c\/strong\u003e High-temp nylon (PA66)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable as:\u003c\/strong\u003e Bare connector or 15cm pre-wired leads\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Ignition coil harness\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible engines:\u003c\/strong\u003e BMW N52, N53, N54, N55\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e3-Pin Ignition Coil Circuit Assignment\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePin 1 (B+):\u003c\/strong\u003e Coil primary power supply (+12V, ignition-switched)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePin 2 (IGT):\u003c\/strong\u003e Ignition trigger signal from DME (Digital Motor Electronics — BMW’s ECU)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePin 3 (IGF):\u003c\/strong\u003e Ignition confirmation feedback — coil sends a signal to the DME confirming each spark event\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eBMW N-Series Engine Guide\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eN52 (2004–2015):\u003c\/strong\u003e 2.5–3.0L naturally aspirated inline-6. Used in E90\/E91\/E92 3 Series, E60 5 Series, E83\/E70 X3\/X5. Valvetronic variable valve lift.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eN53 (2007–2013):\u003c\/strong\u003e 2.5–3.0L direct injection naturally aspirated inline-6. Used in E90\/E91\/E92 3 Series, E60 5 Series. BMW’s first direct injection inline-6.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eN54 (2006–2016):\u003c\/strong\u003e 3.0L twin-turbocharged inline-6. Used in E90\/E92 335i, E60 535i, E89 Z4 35i. High-performance applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eN55 (2009–2019):\u003c\/strong\u003e 3.0L single twin-scroll turbocharged inline-6. Used in F30 335i, F10 535i, F15 X5 35i. Replaced N54 in most applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFault Codes This Connector Fixes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eP0351:\u003c\/strong\u003e Ignition Coil A Primary\/Secondary Circuit Malfunction (Cylinder 1)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eP0352:\u003c\/strong\u003e Ignition Coil B — Cylinder 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eP0353:\u003c\/strong\u003e Ignition Coil C — Cylinder 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eP0354:\u003c\/strong\u003e Ignition Coil D — Cylinder 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eP0355:\u003c\/strong\u003e Ignition Coil E — Cylinder 5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eP0356:\u003c\/strong\u003e Ignition Coil F — Cylinder 6\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eP0300:\u003c\/strong\u003e Random\/Multiple Cylinder Misfire Detected\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eP030X:\u003c\/strong\u003e Cylinder-specific misfire (P0301–P0306)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: My BMW has a misfire on one cylinder but the coil and spark plug test fine — is this the connector?\u003c\/strong\u003e\u003cbr\u003eA: Yes. A corroded ignition coil connector causes intermittent coil trigger signal loss, which the DME interprets as a misfire even when the coil itself is functional. Swap the connector to a known-good cylinder and see if the misfire follows the connector — if it does, replace the connector.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Are terminals included?\u003c\/strong\u003e\u003cbr\u003eA: Yes, terminals are included with all variants.\u003c\/p\u003e","brand":"Cable Parts Online","offers":[{"title":"Female 15CM","offer_id":47831543677173,"sku":"14:200004889#Female 15CM","price":56.7,"currency_code":"USD","in_stock":true},{"title":"Female","offer_id":47831543709941,"sku":"14:202642826#Female","price":39.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3494\/0149\/files\/Sf14b0aaefda44a52a922db16dae4ce10W.webp?v=1773629292","url":"https:\/\/www.csldmcml.com\/products\/bmw-3-pin-ignition-coil-connector-oem-0221504029-female-n52-n53-n54-n55","provider":"Cable Parts Online","version":"1.0","type":"link"}