Genuine OEM Audi Rear Coil Spring, part number 2Q0511121FF. This essential suspension component is designed to support the vehicle's weight and absorb impacts from road irregularities, contributing to ride comfort and vehicle stability. It is installed in the rear suspension assembly, working in conjunction with the shock absorber. Manufactured from high-strength spring steel, it is engineered to maintain its load-bearing capacity and rebound characteristics over time. A genuine OEM coil spring ensures the correct spring rate and dimensions, critical for maintaining factory ride height, handling dynamics, and preventing premature wear on other suspension components.