Genuine OEM Volkswagen Rear Spring Stop Buffer, part number 5R3511357R. This buffer is designed to progressively absorb energy and limit the upward travel of the suspension, preventing the spring from fully compressing and causing harsh impacts. It is positioned above the coil spring in the rear suspension assembly. Weighing 0.386 kg, it measures 158mm in length, 158mm in width, and 160mm in height. Choosing a genuine OEM spring stop buffer ensures the correct material density and shape for optimal impact absorption, protecting suspension components and maintaining ride quality.