Genuine OEM Audi Rear Left Suspension Control Arm, part number 4K0505397A. This essential component is part of the vehicle's rear suspension system, connecting the wheel hub to the vehicle frame. It plays a critical role in maintaining proper wheel alignment, handling characteristics, and overall ride comfort. This control arm is specifically designed for the rear left side of the vehicle. Weighing approximately 1.447 kg, it is constructed from a robust metal alloy. Choosing a genuine OEM control arm ensures precise manufacturing tolerances, correct suspension geometry, and high-quality bushings that provide optimal vibration damping and a long service life, crucial for vehicle stability and safety.