Genuine OEM Volkswagen Door Window Guide, part number 5H4837439B5AP. This component is essential for guiding the door window glass smoothly as it moves up and down, preventing rattling and ensuring proper sealing. It is positioned within the door frame, along the upper and side edges of the window opening. Made from durable materials with a black (5AP) finish, it provides reliable performance. Using a genuine OEM guide ensures correct dimensions, material quality, and optimal window operation, which is crucial for both function and noise reduction.