NGK Chevrolet Classic 2005-2004 Direct Fit Oxygen Sensor

This NGK oxygen sensor is a direct fit for your 2002-2005 Pontiac Grand Am. Oxygen sensors are a key part of your car's diagnostic system, helping to keep the engine running at its best. They provide feedback to the car's computer to control the air-fuel mixture, which is important for getting good gas mileage and keeping emissions down. If the sensor isn't working right, it can also alert you to potential issues with fuel delivery or the catalytic converter.

NGK, a major supplier of original equipment sensors, builds these with an advanced ceramic sensor element. This element features a three-stage protective coating that acts as a plasma jet and deposit trap. This design helps shield the sensor from contaminants that could otherwise poison it and cause it to fail prematurely. Because NTK controls the ceramic element from raw material to the finished product, they can ensure a well-built part that works as intended.