NGK Audi A4 2001-2000 Direct Fit Oxygen Sensor

The advanced ceramic element in this NGK oxygen sensor is built with a 3-stage plasma jet and deposit trap overcoat. This design helps protect the sensor from contaminants, which can poison the element and lead to performance issues. As a critical part of your vehicle's on-board diagnostic system, oxygen sensors like this one help maintain optimal engine performance, maximize fuel efficiency, and reduce harmful emissions by providing constant feedback to the ECU about the air-fuel ratio.

NTK, a leading manufacturer of OEM oxygen sensors, uses state-of-the-art technology to control the ceramic element from raw material to the finished product. This focus on material control ensures that the sensor is well-built and ready to perform. This direct-fit sensor is designed to work with a range of vehicles, including models like the Audi A4, Audi A6, and Volkswagen Passat, helping to alert your OBDII system to potential problems with fuel delivery or catalytic converter efficiency.