NGK BMW 325Ci 2006-2003 Direct Fit 5-Wire Wideband A/F Sensor

NGK is known worldwide as a top supplier of original equipment oxygen sensors. This 5-wire wideband air-fuel ratio sensor is designed to help your vehicle's computer, or ECU, keep the air-fuel mixture exactly where it needs to be. Unlike older sensors that just tell the ECU if the mix is rich or lean, this wideband sensor gives a precise, linear reading. This allows for continuous, accurate adjustments to maintain the ideal stoichiometric ratio, which means better combustion, improved fuel efficiency, and reduced emissions.

The advanced ceramic element inside this sensor is built tough. It features a three-stage contaminant-resistant design with a plasma jet and deposit trap overcoat. This helps protect the sensor from poisoning by contaminants, ensuring it keeps working accurately for longer. NGK works closely with OEM manufacturers throughout the entire development process, from the initial idea to the final production, to ensure top performance and resistance to common failure points.

This sensor is a direct fit for a range of BMW models, including the 325Ci, 330i, and 530i, among others. It's a solid option if you're looking to replace a faulty sensor or want to ensure your engine management system is getting the most accurate data possible.