Genuine OEM Audi Window Aperture Seal, part number 420837477B. This left-side seal is designed to provide a weather-tight closure around the window opening of the door, preventing water, wind, and noise intrusion. It is positioned along the upper frame of the left door. Made from durable, flexible rubber or polymer, it measures 1.17m in length and weighs 0.276 kg. Using a genuine OEM seal ensures precise fitment, optimal sealing performance, and resistance to environmental factors, maintaining interior comfort and protection.