Keeping you Ready for the Road Ahead™, the Dorman Nitrogen Oxide (NOx) Sensor Inlet keeps you and the environment safe from the devastating effects of NOx, such as: chronic lung function, breathing problems, headaches, and much more. This high-temperature sensor is designed to alert you of dangerous levels of diesel-fueled vehicle’s NOx output within the Diesel Particulate Filter (DPF). These heavy duty NOx sensors are re-engineered for increased performance giving you a peace of mind you are in good hands. FleetPride is your First Click in Heavy Duty®.