Genuine OEM Volkswagen Door Window Regulator, part number 7H0837729BA. This assembly enables the smooth and controlled raising and lowering of the door window. It is positioned within the front left door panel. Weighing 4.45 kg and measuring approximately 0.72m x 0.68m x 0.18m, this complex component is engineered for precise operation. Choosing a genuine OEM window regulator ensures correct motor calibration, cable tension, and mounting points for seamless integration and long-term reliability of the window system.