Genuine OEM Volkswagen Exterior Mirror Housing, part number 5H1857508AL9B9. This part serves as the protective outer shell for the exterior mirror assembly, housing the mirror glass and adjustment mechanisms. It is positioned on the exterior of the vehicle, typically on the driver or passenger side door. This housing features a Satin Black L9B9 finish. Genuine OEM exterior mirror housings ensure precise fitment and durability, maintaining the aerodynamic profile and factory appearance of the vehicle.