Genuine OEM Audi Rear Coil Spring, part number 4F0511115BK. This vital suspension component provides structural support and absorbs impacts from road irregularities, ensuring a comfortable ride and stable handling. It is specifically designed for the rear axle assembly. Weighing approximately 3.40 kg, this coil spring is built to factory specifications. Opting for a genuine OEM coil spring guarantees the correct spring rate, height, and material quality for maintaining original ride comfort and vehicle dynamics.