BMW / Mercedes-Benz 2-Pin Waterproof Fuel Injector Wire Harness Connector – Female OEM

This 2-pin waterproof female connector is used in BMW and Mercedes-Benz fuel injector harnesses. The 2-pin configuration serves the injector solenoid power and ECU-controlled ground circuits. Sealed housing ensures reliable injector signal continuity in the high-heat, high-vibration underhood environment. Available bare or with 15cm pre-wired leads.

Key Specifications

Why Injector Connectors Fail

BMW and Mercedes-Benz fuel injector connectors are mounted directly on the injector body, exposed to extreme underhood heat, fuel spray, and vibration. Terminal corrosion, housing melting from heat soak, or connector body cracking causes intermittent injector faults. Symptoms include rough idle, misfires, P0300-series misfire codes, and P0201–P0208 injector circuit faults. Replacing the connector restores clean injector solenoid circuit continuity.

Variant Guide

• Female – Bare 2-pin housing with terminals
• Female 15CM – Pre-wired with 15cm leads for direct splice-in installation

Installation Steps

1. Depressurize the fuel system before working on injector components
2. Allow the engine to cool before working near injectors
3. Locate the 2-pin injector connector on the affected cylinder’s injector
4. Release the locking tab and unplug the original connector
5. Transfer terminals to the new housing or splice in the pre-wired variant
6. Clear P0201–P0208 fault codes with BMW ISTA or Mercedes XENTRY

Frequently Asked Questions

Q: What BMW and Mercedes-Benz models use this 2-pin injector connector?
A: This connector is used on BMW 3 Series, 5 Series, X3/X5, and Mercedes-Benz C-Class, E-Class, GLC fuel injector harnesses. Cross-reference your vehicle’s wiring diagram to confirm fitment.

Q: What fault codes indicate a failed injector connector?
A: Common codes include P0201–P0208 (individual cylinder injector circuit), P0300–P0308 (cylinder misfire), and fuel trim faults (P0171/P0172) on BMW ISTA or Mercedes XENTRY diagnostic systems.

Q: Are terminals included?
A: Yes, terminals are included with all variants.

Compatible Applications

• BMW 3 Series / 5 Series / X3 / X5 – Fuel injector harness
• Mercedes-Benz C-Class / E-Class / GLC – Injector solenoid connector
• Port and direct injection (GDI) injector harness repair