Genuine OEM Audi Rocker Panel Reinforcement, part number 420803699A. This reinforcement is a structural component designed to strengthen the rocker panel area of the vehicle's body. It contributes to the overall rigidity and safety of the car's chassis. Located in the body exterior, this part plays a vital role in impact absorption and maintaining the integrity of the lower body structure. Genuine OEM body panels are manufactured with exact fitment and material specifications to ensure proper structural integrity and corrosion resistance.