Genuine OEM Audi Control Arm Ball Joint, part number 4M0407689C. This critical front suspension component provides a flexible pivot point, connecting the control arm to the steering knuckle. It allows for the necessary articulation during steering and suspension travel, ensuring precise handling and ride comfort. Weighing 0.59 kg, this ball joint is constructed from robust metal with a protective rubber boot. Choosing a genuine OEM ball joint guarantees factory-specified tolerances and durable materials, crucial for maintaining steering precision, suspension integrity, and vehicle safety.