The Mercedes Benz 17-23 Radar Control Unit Distronic Control Unit OEM A2139004831 is a front-mounted radar sensor designed for easy installation. This bolt-on unit has a pin terminal type and a black connector color. Made of plastic and weighing 1 lb., it is a high-quality product from Mercedes-Benz, ensuring accurate detection and control for advanced driver assistance systems in your vehicle. With its specific sensor type and unique features, this radar control unit is a reliable and essential part for modern Mercedes-Benz vehicles.