NGK Mazda Protege 2003-1999 Direct Fit Oxygen Sensor

This NGK oxygen sensor is what you get when you need to replace the one on your 1999-2001 Mazda Protege. Oxygen sensors are a key part of your car's onboard diagnostic system. They help keep your engine running at its best, which means better gas mileage and fewer emissions. This sensor sends constant information to your car's computer about the air-fuel mix, helping it stay balanced and also alerting you if there are issues with fuel delivery or the catalytic converter.

NGK, a major supplier of original equipment sensors, uses advanced technology in their ceramic elements. This particular sensor features a 3-stage plasma jet and deposit trap overcoat. This design helps protect the sensor element from contamination, which can cause it to fail prematurely. Because NGK controls the ceramic element from the raw material all the way to the finished product, you can trust the technology behind it.