2-Pin 12065863 Waterproof Male & Female Connector – GM Metri-Pack 280 Series

Direct-fit replacement for GM OEM part number 12065863, a 2-pin waterproof 2.8mm Metri-Pack 280 connector used across GM vehicle platforms and motorcycle harnesses. The 2-pin Metri-Pack 280 is the most common connector format for single-sensor and single-actuator circuits – including the widely-used EV1 fuel injector connector found on millions of GM, Ford, and Asian OEM vehicles.

Key Specifications

• OEM Part Number: 12065863
• Pin Count: 2
• Gender: Male & Female set (with wire)
• Terminal Pitch: 2.8mm (Metri-Pack 280 series)
• Wire Gauge: 18 AWG (0.5 mm²)
• Wire Length: 5.5 inches (140 mm)
• Waterproof Rating: IP68
• Housing Material: PA66 glass-filled nylon
• Terminal Material: Copper alloy, tin-plated
• Current Rating: Up to 13A per pin

Common Applications

• EV1 fuel injector connector – GM 3.1L, 3.4L, 3.8L, 5.0L, 5.7L V8 engines
• Oxygen (O2) sensor connector – upstream and downstream sensor harnesses
• Coolant temperature sensor (CTS) – 2-pin sensor harness
• Idle air control (IAC) valve – 2-pin actuator connector
• Motorcycle lighting circuits – headlight, taillight, and turn signal harnesses
• Marine and powersports – sensor and actuator wiring in wet environments

EV1 vs EV6 – Critical Distinction

The 2-pin Metri-Pack 280 (12065863) is the EV1 injector connector format. It is not compatible with the EV6 (USCAR) connector used on newer GM, Ford, and most modern injectors. Key differences:

• EV1 (12065863): Oval housing, side-entry latch, used on pre-2000 GM and many Asian OEM injectors
• EV6 (USCAR): Rectangular housing, top-entry latch, used on most post-2000 injectors
• Adapters exist to convert EV1 to EV6, but direct replacement requires matching the original format

Fault Codes Linked to 12065863 Connector Failure

• P0201–P0208 – Injector circuit open (most common – corroded EV1 connector)
• P0131 / P0151 – O2 sensor circuit low (open at sensor connector)
• P0117 – ECT sensor circuit low (corroded 2-pin CTS connector)

Frequently Asked Questions

Q: Is 12065863 the EV1 fuel injector connector?
A: Yes. The 12065863 is the GM OEM part number for the 2-pin Metri-Pack 280 EV1 injector connector. It is one of the most widely used injector connectors in automotive history, found on GM, Ford (with adapter), and many Asian OEM vehicles.

Q: Will this connector fit Bosch injectors?
A: Bosch injectors use the EV6 (USCAR) connector format, not EV1. The 12065863 will not directly fit Bosch EV6 injectors without an EV1-to-EV6 adapter pigtail.

Q: What crimping tool is needed?
A: Use the Kent-Moore J-38125-6 or Delphi 12085271 ratchet crimper for 2.8mm Metri-Pack 280 terminals. Crimp height must be within 1.50–1.65mm for reliable contact.

Package Contents

1 × 2-Pin Male Connector (12065863) with 18 AWG wire
1 × 2-Pin Female Connector (12065863) with 18 AWG wire and terminal inserts