The Bosch Oxygen Sensor - 13951 is a high-quality sensor designed to measure the amount of oxygen present in a vehicle's exhaust gas. It is a crucial component of the vehicle's emission control system, helping to ensure optimal fuel efficiency and reduce harmful emissions. This sensor is designed to be durable and reliable, with a long lifespan and accurate readings. It is compatible with a wide range of vehicle makes and models, making it a versatile choice for automotive professionals and DIY enthusiasts. This sensor is a direct replacement for the original equipment, making installation quick and easy. It is an essential component for maintaining the overall performance and efficiency of a vehicle.