NGK Audi A4 1999-1996 Direct Fit Oxygen Sensor

NGK is known worldwide as a leading supplier of original equipment oxygen sensors. This direct-fit oxygen sensor is designed for your 1996-1999 Audi A4. Oxygen sensors are a key part of your car's onboard diagnostic system, helping to keep the engine running smoothly, improve fuel economy, and reduce emissions. They send constant feedback to the engine control unit (ECU) to manage the air-fuel mixture and alert you to potential issues with fuel delivery or the catalytic converter.

This sensor features an advanced ceramic element with a 3-stage contaminant-resistant plasma jet and deposit trap overcoat. This design helps protect the element from poisoning, ensuring consistent performance and longevity. NTK, the manufacturer, is a ceramics company at its core, controlling the ceramic element from raw material to the finished product, working with OEM manufacturers through every step of development.