Genuine OEM Audi Rear Upper Control Arm, part number 4M0505397P. This vital suspension component plays a key role in maintaining proper wheel alignment and stability, connecting the wheel hub to the vehicle's chassis. It is located in the upper section of the rear suspension assembly. Weighing 1.471 kg, this arm measures approximately 0.47 meters in length. Choosing a genuine OEM control arm ensures the correct geometry, material strength, and bushing quality for reliable suspension performance and vehicle handling.