The Oxygen Sensor for IS250 2006-2007 is designed to complement your car's engine control unit and ensure optimal air-fuel ratio and emissions. This OE (Original Equipment) replacement part is a must-have for maintaining the health and longevity of your vehicle. The upstream oxygen sensor measures the amount of oxygen in the exhaust gases, while the downstream oxygen sensor measures the oxygen content of the intake air. By comparing the signals from both sensors, the engine control unit can calculate the air-fuel ratio and adjust it accordingly. This, in turn, leads to improved fuel efficiency, reduced emissions, and a quieter, more responsive engine. This oxygen sensor kit comes with two sensors - 234-9058 for the upstream location and 234-9051 for the downstream location - ensuring a perfect fit and optimal performance.
