Genuine OEM Audi Front Coil Spring, part number 4F0411105BJ. This vital suspension component is engineered to absorb impacts from road imperfections and support the vehicle's weight, ensuring a smooth ride and stable handling. It is installed as part of the front suspension system, working in conjunction with the shock absorber. Weighing 2.531 kg, this spring measures approximately 0.365m in length with a diameter of 0.133m. Choosing a genuine OEM coil spring guarantees the correct spring rate, material fatigue resistance, and precise dimensions for optimal ride height and suspension performance, maintaining the vehicle's intended dynamics.