Genuine OEM Volkswagen Rear Coil Spring, part number 3C0511115AK. This essential suspension component is responsible for supporting the vehicle's weight and absorbing impacts from road irregularities, contributing significantly to ride comfort and stable handling. It is installed in the rear suspension assembly. The spring features a durable black finish, designed to resist corrosion and maintain its load-bearing capacity over time. Installing a genuine OEM coil spring ensures the correct spring rate, ride height, and fatigue resistance, which are vital for maintaining the vehicle's intended handling characteristics and safety.