Genuine OEM Volkswagen Rear Coil Spring, part number 5Q0511115BA. This essential suspension component is located at the rear of the vehicle, responsible for supporting the vehicle's weight and absorbing impacts from road imperfections. It works in conjunction with the shock absorber to provide a smooth and stable ride. This coil spring weighs 1.848 kg and has a length of 0.346 meters. Choosing a genuine OEM coil spring ensures it meets factory specifications for spring rate, height, and material fatigue resistance, which is critical for maintaining proper vehicle dynamics, handling, and ride quality.