The Bosch Oxygen Sensor - 13918 is a high-quality sensor used to measure the oxygen levels in a vehicle's exhaust system. It is designed to provide accurate readings and help improve engine performance and fuel efficiency. This sensor is compatible with a wide range of vehicles and is easy to install. It is made with durable materials and is built to withstand harsh conditions. The Bosch Oxygen Sensor - 13918 is an essential component for maintaining the proper air-to-fuel ratio in a vehicle's engine.