The Bosch Oxygen Sensor - 17126 is a high-quality automotive sensor designed to measure the amount of oxygen in a vehicle's exhaust gas. It is a direct replacement for the original equipment sensor and is compatible with a wide range of vehicle makes and models. The sensor is designed to provide accurate readings to the vehicle's engine control unit, allowing for optimal fuel efficiency, reduced emissions, and improved engine performance. It is constructed with durable materials and features a high-quality design to ensure long-lasting reliability. This oxygen sensor is an essential component for maintaining the overall health and efficiency of a vehicle's engine.