2-Pin Engine Cooling Fan Motor Wire Harness Connector – OEM 88988506 / 1351735 | Female

The OEM 88988506 / 1351735 is a 2-pin female connector used in engine cooling fan motor harnesses on GM, Opel, and Vauxhall vehicles. The 2-pin configuration carries fan motor power and ground circuits. Available bare or with 15cm pre-wired leads.

Key Specifications

• OEM Part Numbers: 88988506 / 1351735
• Pin count: 2-pin
• Gender: Female
• Housing material: High-temp nylon (PA66)
• Available as: Bare connector or 15cm pre-wired leads
• Application: Engine cooling fan motor harness
• Compatible brands: GM, Opel, Vauxhall, Chevrolet

2-Pin Cooling Fan Circuit Assignment

• Pin 1 (PWR): Fan motor power supply (12V, relay-switched)
• Pin 2 (GND): Fan motor ground (ECU-controlled for variable speed fans)

Why Cooling Fan Connectors Fail

The cooling fan connector is mounted in the engine bay, directly in front of the radiator — one of the most thermally stressed locations on the vehicle. The connector is exposed to:

• High underhood temperatures: Repeated heat cycling causes the connector housing to become brittle and the locking tab to fail
• Coolant contamination: Coolant leaks from the radiator or hoses can wick into the connector via capillary action, causing pin corrosion
• Vibration: The cooling fan generates significant vibration that stresses the connector locking mechanism

Fault Codes This Connector Fixes

• P0480: Cooling Fan 1 Control Circuit Malfunction
• P0481: Cooling Fan 2 Control Circuit Malfunction
• P0482: Cooling Fan 3 Control Circuit Malfunction
• P0483: Cooling Fan Rationality Check Malfunction
• P0495: Fan Speed High — Input (fan running at wrong speed due to circuit fault)

Compatible GM / Opel / Vauxhall Models

• Opel/Vauxhall Astra (H/J): 1.4–2.0 petrol and diesel engines
• Opel/Vauxhall Insignia (A): 1.6–2.8 petrol and diesel engines
• Opel/Vauxhall Zafira (B/C): 1.6–2.0 petrol and diesel engines
• Chevrolet Cruze (J300): 1.4–2.0 petrol and diesel engines
• Chevrolet Malibu (Gen8): 2.0–2.5 petrol engines

Frequently Asked Questions

Q: My engine is overheating but the cooling fan doesn’t run — is this the connector?
A: Yes. A corroded or disconnected cooling fan connector prevents the fan from receiving power, causing overheating. Check the connector before replacing the fan motor ($80–$200) or the cooling fan relay ($15–30).

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