The Bosch Oxygen Sensor - 17477 is a high-quality sensor designed to measure the amount of oxygen in a vehicle's exhaust gas. It is specifically designed for use in gasoline engines and helps to ensure optimal fuel efficiency and reduced emissions. This sensor is made with durable materials and is built to withstand harsh conditions, making it a reliable choice for automotive applications. It is compatible with a wide range of vehicle makes and models, and is designed to provide accurate readings for improved engine performance.