Genuine OEM Audi Rear Coil Spring, part number 3C0511115AE. This essential suspension component is designed to absorb road shocks and support the vehicle's weight, providing a comfortable ride and maintaining proper vehicle height and handling characteristics. It is specifically installed in the rear suspension assembly. Weighing 2.05 kg, this coil spring is made from high-strength steel. Choosing a genuine OEM coil spring ensures the correct spring rate, material fatigue resistance, and precise dimensions, which are critical for maintaining vehicle balance, ride quality, and preventing premature sagging or breakage.