{"product_id":"fuel-injector-connector-2pin-3pin-4pin-female-oem-mpi-gdi-piezo","title":"Fuel Injector Connector – 2-Pin, 3-Pin \u0026 4-Pin Female OEM | MPI GDI Piezo","description":"\u003ch2\u003eFuel Injector Connector – 2-Pin, 3-Pin \u0026amp; 4-Pin Female OEM | MPI \/ GDI \/ Piezo\u003c\/h2\u003e\n\u003cp\u003eFuel injector connectors come in different pin counts depending on the injector technology and engine management system. This product covers three configurations — \u003cstrong\u003e2-pin, 3-pin, and 4-pin female\u003c\/strong\u003e — to serve different injector types across multiple vehicle platforms. Available bare or with 15cm pre-wired leads for direct splice-in installation.\u003c\/p\u003e\n\n\u003ch3\u003eWhich Pin Count Do I Need? – Injector Technology Guide\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePin Count\u003c\/th\u003e\n\u003cth\u003eInjector Type\u003c\/th\u003e\n\u003cth\u003eCircuit Function\u003c\/th\u003e\n\u003cth\u003eTypical Applications\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e2-Pin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard solenoid (MPI\/port injection)\u003c\/td\u003e\n\u003ctd\u003ePin 1: +12V battery power\u003cbr\u003ePin 2: ECU-controlled ground (injector pulse)\u003c\/td\u003e\n\u003ctd\u003eMajority of naturally aspirated and turbocharged petrol\/diesel engines with conventional solenoid injectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e3-Pin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSolenoid with integrated fuel pressure\/temperature sensor\u003c\/td\u003e\n\u003ctd\u003ePin 1: +12V power\u003cbr\u003ePin 2: ECU ground\u003cbr\u003ePin 3: Sensor signal to ECU\u003c\/td\u003e\n\u003ctd\u003eSome GDI (Gasoline Direct Injection) systems with rail pressure monitoring at the injector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e4-Pin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePiezoelectric injector or dual-coil solenoid\u003c\/td\u003e\n\u003ctd\u003ePins 1\u0026amp;2: Piezo crystal drive power\u003cbr\u003ePins 3\u0026amp;4: Piezo crystal drive ground\u003c\/td\u003e\n\u003ctd\u003eBosch HDEV5 high-pressure GDI piezo injectors; some diesel common rail systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Count Options\u003c\/td\u003e\n\u003ctd\u003e2-Pin (2P) \/ 3-Pin (3P) \/ 4-Pin (4P)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGender\u003c\/td\u003e\n\u003ctd\u003eFemale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003eHigh-temp nylon (PA66), rated for injector proximity heat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire Option\u003c\/td\u003e\n\u003ctd\u003eBare connector \/ 15cm pre-wired leads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eFuel injector solenoid harness (MPI, GDI, piezo)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eFault Codes This Connector Fixes\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eCode\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003cth\u003eRoot Cause\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eP0201–P0208\u003c\/td\u003e\n\u003ctd\u003eInjector circuit open\/short (cylinders 1–8)\u003c\/td\u003e\n\u003ctd\u003eCorroded or broken injector connector pins\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eP0300–P0308\u003c\/td\u003e\n\u003ctd\u003eRandom\/cylinder-specific misfire\u003c\/td\u003e\n\u003ctd\u003eIntermittent injector circuit from loose connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eP0171 \/ P0172\u003c\/td\u003e\n\u003ctd\u003eSystem lean\/rich (fuel trim fault)\u003c\/td\u003e\n\u003ctd\u003eInjector not firing correctly due to connector fault\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eP0087\u003c\/td\u003e\n\u003ctd\u003eFuel rail pressure too low\u003c\/td\u003e\n\u003ctd\u003e3-pin variant: pressure sensor signal lost at connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhy Fuel Injector Connectors Fail\u003c\/h3\u003e\n\u003cp\u003eFuel injector connectors are mounted directly on the injector body, in the hottest and most vibration-intensive area of the engine. Thermal cycling from engine heat (underhood temperatures regularly exceed 120°C) combined with fuel vapour exposure degrades the connector housing and accelerates terminal oxidation. The locking tab is particularly vulnerable — repeated injector removal for service causes locking tab fractures, allowing the connector to work loose under engine vibration. A partially disengaged injector connector causes intermittent P0201–P0208 codes that are difficult to reproduce during a cold diagnostic session.\u003c\/p\u003e\n\n\u003ch3\u003ePiezo Injector Connectors – Critical Warning\u003c\/h3\u003e\n\u003cp\u003ePiezoelectric injectors (Bosch HDEV5 and similar) operate at \u003cstrong\u003e150–200V\u003c\/strong\u003e internally — far higher than standard 12V solenoid injectors. The 4-pin connector for piezo injectors must be rated for this voltage. Never substitute a standard 2-pin solenoid injector connector on a piezo injector application. The connector housing and terminal materials are specifically rated for piezo injector operating conditions.\u003c\/p\u003e\n\n\u003ch3\u003eVariant Guide\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2P Female \/ 2P Female 15CM\u003c\/strong\u003e – Standard solenoid injector (MPI\/port injection)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3P Female \/ 3P Female 15CM\u003c\/strong\u003e – GDI injector with integrated pressure\/temperature sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4P Female \/ 4P Female 15CM\u003c\/strong\u003e – Piezo or dual-coil solenoid injector\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I know which pin count my injector uses?\u003c\/strong\u003e\u003cbr\u003eA: Count the pins on your existing injector connector. Alternatively, identify your injector type: standard solenoid = 2-pin; GDI with integrated pressure sensor = 3-pin; piezo or dual-coil = 4-pin. If unsure, check your vehicle’s wiring diagram or the injector part number.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use a 2-pin connector on a 3-pin injector?\u003c\/strong\u003e\u003cbr\u003eA: No. The 3-pin injector requires all three circuits to function correctly. Using a 2-pin connector will leave the sensor circuit open, causing fuel pressure monitoring faults (P0087) and potentially incorrect fuel delivery.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: My injector fault code only appears when the engine is hot — why?\u003c\/strong\u003e\u003cbr\u003eA: Thermal expansion causes connector housings to expand and contract with temperature. A cracked locking tab or corroded terminal that makes intermittent contact at cold temperatures will lose contact when the connector housing expands at operating temperature. This is the classic symptom of a failing injector connector rather than a failed injector.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are terminals included?\u003c\/strong\u003e\u003cbr\u003eA: Yes, terminals are included with all variants.\u003c\/p\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2P:\u003c\/strong\u003e Standard MPI\/port injection solenoid injector harness — multi-brand (Toyota, Honda, VW, BMW, Ford, GM, Renault, Peugeot\/Citroën)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3P:\u003c\/strong\u003e GDI injector with integrated fuel pressure or temperature sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4P:\u003c\/strong\u003e Bosch HDEV5 piezo injector; dual-coil solenoid injector harness\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Cable Parts Online","offers":[{"title":"2P Female","offer_id":47831529390325,"sku":"14:202642826#2P Female","price":19.8,"currency_code":"USD","in_stock":true},{"title":"2P Female 15CM","offer_id":47831529292021,"sku":"14:200004891#2P Female 15CM","price":22.8,"currency_code":"USD","in_stock":true},{"title":"3P Female","offer_id":47831529357557,"sku":"14:200004889#3P Female","price":24.8,"currency_code":"USD","in_stock":true},{"title":"3P Female 15CM","offer_id":47831529259253,"sku":"14:200003699#3P Female 15CM","price":29.3,"currency_code":"USD","in_stock":true},{"title":"4P Female","offer_id":47831529324789,"sku":"14:200004890#4P Female","price":28.8,"currency_code":"USD","in_stock":true},{"title":"4P Female 15CM","offer_id":47831529226485,"sku":"14:200002130#4P Female 15CM","price":34.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3494\/0149\/files\/S9efeb5a1b78e4366861c8a463336922bU.webp?v=1773629029","url":"https:\/\/www.csldmcml.com\/products\/fuel-injector-connector-2pin-3pin-4pin-female-oem-mpi-gdi-piezo","provider":"Cable Parts Online","version":"1.0","type":"link"}