Genuine OEM Audi Rear Coil Spring, part number 1K0511115HD. This essential suspension component supports the vehicle's weight and absorbs road shocks, contributing to ride comfort and stability. It is installed in the rear suspension assembly. Weighing 2.206 kg, this spring measures 0.315 m in length, 0.113 m in width, and 0.113 m in height. Choosing a genuine OEM coil spring ensures the correct factory-specified spring rate, material composition, and durability for consistent performance and a long service life.