Genuine OEM Audi Rear Coil Spring, part number 8Z0511115BB. This robust spring is a critical component of the vehicle's suspension system, designed to support the vehicle's weight and absorb impacts from road irregularities. It is specifically engineered for the rear suspension, contributing to ride comfort and handling stability. Weighing approximately 1.351 kg, this spring is built for durability. Opting for a genuine OEM coil spring ensures precise spring rates, correct ride height, and factory-specified fatigue resistance, which are crucial for maintaining vehicle dynamics and safety.