Genuine OEM Audi Wheel Arch Liner, part number 420821171F. This essential component is designed to protect the wheel well and engine components from road debris, water, and other environmental elements. It is positioned in the front left wheel arch. Made from durable, impact-resistant plastic, it weighs approximately 1.58 kg. Choosing a genuine OEM wheel arch liner ensures precise fitment, proper drainage, and factory-level protection against corrosion and damage, maintaining the vehicle's structural integrity.