ACDelco GM original equipment oxygen sensors are a GM recommended replacement for your vehicle's original component. They are special feedback sensors on your vehicles exhaust system. These sensors measure the proportion of oxygen in the exhaust gases. Using this measurement the engine management computer can then adjust the air/fuel ratio to get the optimized fuel economy, performance, and emissions. These original equipment oxygen sensors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
