The Bosch Saab Oxygen Sensor - 15894 is a high-quality sensor designed specifically for Saab vehicles. It is used to measure the amount of oxygen in the exhaust gas and send this information to the engine control unit. This data is then used to adjust the air-fuel mixture for optimal performance and fuel efficiency. The sensor is made with durable materials and is precision engineered to ensure accurate readings and long-lasting performance. It is a direct replacement for the original sensor and is compatible with various Saab models.