Longer Service Life and Better Fuel Economy. If you're looking to improve your car's performance and fuel economy, you need to be sure that you have the right oxygen sensors in place. With Bosch 17025 Premium Wideband A/F Oxygen (O2) Sensors, you can trust that you're getting precision-engineered sensors designed to work with your modified car and high performance wideband kits. These sensors will help ensure that your car is running as efficiently as possible, delivering improved fuel economy and optimized performance.

Better Engine Performance. Our Wideband LSU sensor uses a more sophisticated sensing element that provides a signal that is proportional to the amount of oxygen in the exhaust, resulting in improved engine performance.

Longer Sensor Life. Our robust sensor design increases sensor longevity, making it a great choice for serious drivers.

Easy Installation. The 5-wire 4.9 sensor features a connector kit that makes installation easier by including all necessary hardware for use on most vehicles, as well as instructions on how to install it yourself or have someone else do it for you.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov