The Bosch Oxygen Sensor - 17278 is a high-quality automotive sensor designed to measure the oxygen content in a vehicle's exhaust system. It is a direct fit replacement for the original sensor and is compatible with a wide range of vehicles. This sensor plays a crucial role in ensuring optimal fuel efficiency and reducing harmful emissions. It is made with durable materials and advanced technology to provide accurate readings and long-lasting performance. The Bosch Oxygen Sensor - 17278 is an essential component for maintaining the overall health and performance of a vehicle's engine.