4-Pin Waterproof O2 Sensor Connector – BMW OEM 2-967640-1 AMP TE Connectivity

Direct-fit replacement for AMP/TE Connectivity part number 2-967640-1, a 4-pin IP68 waterproof female connector used for oxygen (O2/lambda) sensor, AV video, and audio harness connections on BMW vehicles. The 4-pin design provides two heater circuit pins and two signal circuit pins for heated wideband and narrowband O2 sensors.

Key Specifications

• OEM Part Number: 2-967640-1 (AMP / TE Connectivity)
• Pin Count: 4
• Gender: Female (with wire)
• Wire Gauge: 20 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 5A per pin

O2 Sensor Pin Assignment (4-Pin Heated)

Compatible BMW Applications

• BMW 3 Series (E46/E90): Pre-cat and post-cat O2 sensor harness connector
• BMW 5 Series (E60/E61): Lambda sensor harness connector
• BMW X3 / X5 (E83/E53): O2 sensor and exhaust harness connector
• General: AV video and audio harness connectors using 2-967640-1 housing

Diagnosis – O2 Sensor Faults

• P0130–P0167 (O2 Sensor Circuit): Inspect 2-967640-1 connector before replacing sensor – a corroded terminal is a common root cause on BMW
• P0141 / P0161 (O2 Sensor Heater Circuit): Check Pin 1 (12V heater supply) and Pin 2 (heater ground) – an open circuit at the connector prevents heater activation and causes slow sensor warm-up
• BMW fault codes: 2A67 (O2 Sensor Before Cat, Bank 1), 2A68 (O2 Sensor After Cat, Bank 1) – check connector before replacing sensor

FAQ

Q: Is 2-967640-1 for the upstream or downstream O2 sensor on BMW?
A: The 2-967640-1 connector is used for both upstream (pre-cat) and downstream (post-cat) O2 sensors on BMW platforms. Confirm the connector location and wire colours match your vehicle's harness before installation.

Q: What is the difference between a narrowband and wideband O2 sensor connector?
A: Narrowband sensors use 4 pins (2 heater + 2 signal); wideband sensors typically use 6 pins (2 heater + 4 signal for the Nernst cell and pump cell). The 2-967640-1 is a 4-pin connector used for narrowband sensors.

Package Contents

1 × 4-Pin Female Connector (2-967640-1) with 20 AWG wire and terminal insert