Genuine OEM Audi Rear Left Sunroof Glide Piece, part number 4E0877275B. This component is essential for the smooth and quiet operation of the sunroof mechanism. Located on the rear left side, it guides the sunroof panel along its tracks, reducing friction and preventing binding. Genuine OEM glide pieces are manufactured from durable, low-friction materials to ensure precise movement and long-lasting reliability of the sunroof system.