Bilstein B4 Series Gas-Pressure Shock Absorber. Technical Specifications: Position: Rear Axle; Design: 46mm Monotube; System: Top Pin, Bottom Eye; Adjustability: Non-adjustable. This premium replacement shock absorber is engineered to restore the original ride characteristics and handling of your Mercedes-Benz GL or ML class. It is designed specifically for vehicles equipped with standard suspension (Non-ADS models). Package Contents: 1x Shock Absorber (Part No: 24-158657), 1x Mounting Kit (Hardware included). Perfect for maintaining OEM levels of comfort and safety.