The Genuine BMW Ultrasonic-Sensor (Black Sapphire) - 66208021864 is a high-quality automotive sensor designed specifically for BMW vehicles. This sensor uses ultrasonic technology to detect objects and obstacles in front of the vehicle, providing the driver with important information for safe and accurate driving. The sensor is finished in a sleek black sapphire color, adding a touch of style to the vehicle's exterior. It is an authentic BMW product, ensuring superior performance and compatibility with BMW models. This sensor is a crucial component for advanced driver assistance systems and is essential for a smooth and safe driving experience.