Genuine OEM Audi Rear Coil Spring, part number 5Q0511115NA. This essential suspension component is designed to support the vehicle's weight and absorb impacts from road irregularities, contributing to ride comfort and handling. It is installed as part of the rear suspension system. Weighing approximately 2.293 kg, this coil spring measures 0.35 meters in length. Opting for a genuine OEM coil spring ensures the correct spring rate, material fatigue resistance, and precise fitment within the suspension assembly, maintaining factory ride characteristics.