The Bosch Oxygen Sensor - 15138 is a high-quality automotive sensor designed to measure the amount of oxygen in a vehicle's exhaust system. It is a crucial component in the engine management system, providing accurate readings to help maintain optimal fuel efficiency and reduce harmful emissions. This sensor is compatible with a wide range of vehicle makes and models and is built to withstand harsh conditions, ensuring long-lasting performance. The Bosch Oxygen Sensor - 15138 is a reliable and essential part for any vehicle's emission control system.