The Bosch Oxygen Sensor Universal 4 Wire - 15738 is a high-quality automotive sensor designed to measure the amount of oxygen in a vehicle's exhaust gases. It is a universal sensor, meaning it can be used on a wide range of vehicle makes and models. The sensor features four wires for easy installation and accurate readings. It is manufactured by Bosch, a trusted brand in the automotive industry known for its reliable and durable products. This oxygen sensor is an essential component in a vehicle's emissions control system, helping to improve fuel efficiency and reduce harmful emissions.