Genuine OEM Volkswagen Rear Coil Spring, part number 6RG511115B. This essential component of the rear suspension system is designed to support the vehicle's weight and absorb impacts from road imperfections, contributing to ride comfort and handling stability. Its specific spring rate and dimensions are engineered for optimal performance. Using a genuine OEM coil spring ensures the correct load-bearing capacity and fatigue resistance, maintaining the vehicle's intended ride height and dynamic characteristics.