Genuine OEM Volkswagen Sliding Door Guide Rail, part number 7T0843871H. This component guides the sliding door along its track for smooth opening and closing. It is positioned in the upper section of the sliding door assembly. With a length of 0.945 m and width of 0.165 m, this guide rail is crucial for maintaining the door's movement. Genuine OEM guide rails provide the exact tolerances and durability required for reliable sliding door function.