The Genuine BMW Ultrasonic-Sensor (Imperialblau) - 66209233036 is a high-quality sensor designed specifically for use in BMW vehicles. It is used to detect and measure distances using ultrasonic waves, providing accurate and reliable data for various vehicle systems such as parking assistance and collision avoidance. The sensor is painted in a sleek Imperialblau color to seamlessly blend in with the vehicle's exterior. It is an essential component for ensuring the safety and convenience of BMW drivers and passengers.