Genuine OEM Audi Rear Bumper Diffuser, part number 8K0807521D1RR. This component is designed to manage airflow under the vehicle, improving aerodynamics and contributing to stability at higher speeds. It is positioned at the lower rear section of the bumper. With a length of 1.47 meters and a 1RR finish, it integrates seamlessly with the vehicle's design. Genuine OEM diffusers ensure precise aerodynamic properties, durable construction, and exact fitment, which are critical for maintaining vehicle performance and aesthetic integrity.