Genuine OEM Audi Front Arch Liner, part number 82A809957AD. This molded plastic panel is installed within the wheel well to protect the vehicle's undercarriage, engine bay, and suspension components from road debris, water, and salt. It is specifically designed for the left front wheel arch. Constructed from durable, impact-resistant plastic, it weighs 1.643 kg. Choosing a genuine OEM arch liner ensures a precise fit, proper drainage, and effective protection against environmental elements, maintaining the integrity of critical vehicle systems.