Genuine OEM Audi Rear Bumper Upper Guide, part number 8K9807889B. This left-side component is designed to precisely guide and secure the upper section of the rear bumper during installation and throughout its service life. It ensures a flush and consistent fit with adjacent body panels, which is crucial for maintaining the vehicle's aesthetic appeal and aerodynamic properties. Using a genuine OEM guide guarantees the correct dimensions and material properties for a perfect, long-lasting fit.