NGK Nissan Altima 2003-2002 Direct Fit Oxygen Sensor

You get a well-built NGK oxygen sensor designed to directly replace the original on a range of vehicles, including the Nissan Altima, Infiniti Q45, and Nissan Sentra. This sensor is a key part of your vehicle's on-board diagnostic system. It constantly sends information to the engine control unit (ECU) about the air-fuel mixture, which is essential for keeping the engine running smoothly, getting the best possible gas mileage, and cutting down on harmful exhaust emissions.

NGK, a major supplier of original equipment sensors, builds these with an advanced ceramic sensor element. This element features a special plasma jet and deposit trap overcoat that helps protect it from contaminants, which can often lead to sensor failure. By controlling the air-fuel ratio, the oxygen sensor also alerts the OBDII system if there are issues with fuel delivery or if the catalytic converter isn't working as it should. Trusting a sensor specialist like NGK means you're getting a part made with OE application technology.