Genuine OEM Volkswagen Window Seal, part number 3C9839472B5AP. This seal functions to provide weatherproofing and noise reduction for the door window assembly. It is located along the upper edge of the door frame where the window sits when closed. The seal is made of rubber for durability and flexibility. Genuine OEM seals ensure precise fitment and long-lasting performance, maintaining factory-level protection against water and wind ingress.