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

NGK is known worldwide as the largest supplier and manufacturer of Original Equipment (OE) oxygen sensors. This 5-wire wideband Air-Fuel Ratio (A/F) sensor is a direct fit replacement designed to help your vehicle's on-board diagnostic system maintain optimal engine performance. Unlike older switching sensors that only indicate rich or lean conditions, wideband sensors like this one provide a linear output signal. 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. The goal is to keep combustion as close to stoichiometric as possible, which means better fuel efficiency, fewer emissions, and smoother running.

This sensor features an advanced ceramic element with a unique 3-stage contaminant-resistant plasma jet and deposit trap overcoat. This design helps protect the sensor element from poisoning, which can lead to premature failure. NTK, as a ceramics company at its core, controls the entire manufacturing process for its wideband sensors, from raw materials to the finished product, ensuring a well-built component. This sensor fits a range of vehicles, including many BMW 1 Series M, 128i, 328i, and Mercedes-Benz C250 models.