NGK BMW 545i 2005-2004 Direct Fit Oxygen Sensor

This NGK oxygen sensor uses an advanced ceramic element with a 3-stage plasma jet and deposit trap overcoat. This design helps protect the sensor from contamination, which is crucial for its job in your vehicle's on-board diagnostic system. Oxygen sensors are key to maintaining optimal engine performance, maximizing fuel efficiency, and reducing harmful emissions by providing constant feedback to the ECU about the air-fuel ratio. They also alert the OBDII system to potential issues with fuel delivery or the catalytic converter.

As the world's largest supplier and manufacturer of OEM oxygen sensors, NTK brings a deep understanding of sensor technology to their parts. They control the ceramic element from raw material to the finished product, ensuring a well-built component. This sensor is designed to fit a range of BMW and Rolls-Royce vehicles, including models like the 545i, 745i, and X5, helping to keep your engine running smoothly and efficiently.