Genuine OEM Volkswagen Rear Bumper Diffuser, part number 5K6807521H9B9. This component is designed to improve the vehicle's aerodynamic performance by managing airflow at the rear. It is positioned on the lower section of the rear bumper. Finished in Satin Black (9B9), it measures approximately 1.335 meters in length and weighs 1.522 kg. Choosing a genuine OEM diffuser ensures precise fitment, factory contour, and optimal aerodynamic function.