NGK Infiniti QX4 2000-1997 Direct Fit Oxygen Sensor

NGK is the world's largest maker of original equipment oxygen sensors, and they bring that same expertise to their aftermarket parts. This direct-fit oxygen sensor is designed for your 1997-2000 Infiniti QX4, helping to keep your engine running smoothly. Oxygen sensors are a key part of your vehicle's diagnostic system, constantly sending information to the computer about the air-fuel mixture. This feedback is crucial for getting the best possible gas mileage and reducing exhaust emissions.

The ceramic element inside this sensor is made using advanced technology, from the raw materials all the way to the finished product. It features a special coating that resists contamination and buildup, which helps prevent the sensor from failing prematurely. By ensuring the correct air-fuel ratio, this sensor also helps alert you to potential issues with your fuel system or catalytic converter.