J.C. Whitney JB960919 5-Wire OEM Replacement Oxygen Sensor

The J.C. Whitney JB960919 is a direct-fit, OEM-replacement oxygen sensor designed for select BMW and Audi vehicles. This 5-wire O2 sensor is engineered to match original equipment specifications, restoring proper exhaust gas monitoring and closed-loop fuel control to your vehicle's engine management system.

Oxygen sensors — also called O2 sensors or lambda sensors — play a critical role in your vehicle's emissions and performance systems. By continuously monitoring exhaust oxygen content and sending voltage signals to the ECU, the sensor enables the engine control module to precisely regulate the air-fuel mixture, maintain catalytic converter efficiency, and prevent fuel economy loss or emissions-related fault codes.

The 5-wire design includes dedicated heating circuit wires to bring the sensor to operating temperature quickly, along with signal and ground wires for accurate feedback to the engine management system.

Key Features:

• Direct OEM replacement — engineered to meet or exceed original equipment specifications
• 5-wire construction for fast sensor warm-up and precise signal output
• Restores proper air-fuel ratio control and closed-loop engine operation
• Helps eliminate oxygen sensor fault codes and check engine light warnings
• Designed for OEM-style fit with matching connector and wire length
• Supports catalytic converter efficiency and reduces harmful emissions

This sensor is a reliable replacement solution for maintaining peak engine performance, fuel efficiency, and emissions compliance on compatible BMW and Audi applications.