Genuine OEM Volkswagen Exterior Mirror Housing, part number 1K8857507R9B9. This is the outer shell for the side mirror assembly, finished in Satin Black (9B9). It is located on the exterior of the vehicle, typically on the driver or passenger side. The housing protects the mirror mechanism, glass, and electrical components from the elements. Genuine OEM parts ensure exact fitment and factory-quality finish, crucial for maintaining the vehicle's appearance and aerodynamic profile.