NGK BMW 1 Series M 2011 Direct Fit 5-Wire Wideband A/F Sensor

This is an NGK 5-wire wideband air-fuel ratio (A/F) sensor, part number 24345. It's a direct fit replacement designed to work with a range of vehicles, including models like the BMW 1 Series M, 335i, and 535i, as well as certain Mercedes-Benz applications. This sensor plays a crucial role in your vehicle's onboard diagnostic system, helping to maintain optimal engine performance, maximize fuel efficiency, and reduce harmful emissions.

Unlike standard oxygen sensors that just signal if the mixture is rich or lean, this wideband sensor provides a linear output. This allows your car's computer (ECU) to know exactly how rich or lean the engine is running and make precise, continuous adjustments to the air-fuel mixture. NGK, a major OEM supplier, builds these sensors with an advanced ceramic element that includes a 3-stage contaminant-resistant plasma jet and deposit trap overcoat. This design helps protect the sensor from poisoning, ensuring reliable operation.