Genuine OEM Volkswagen Left Front Door Window Regulator, part number 5Z3837461A. This mechanical assembly is responsible for controlling the vertical movement of the door window glass, allowing it to be raised and lowered smoothly. It is designed for installation within the left front door. Weighing 0.937 kg, this regulator is built for durability. Choosing a genuine OEM window regulator ensures precise fitment, correct cable tension, and robust components for reliable, quiet, and long-lasting window operation.