Genuine OEM Audi Window Slot Seal, part number 4N4839475CT94. This component seals the window slot, preventing water and debris ingress while providing a clean, finished appearance to the door frame. It is positioned along the upper edge of the rear door window opening. Weighing 0.539 kg and measuring 1.1 meters in length, this seal ensures a precise fit and factory-correct aesthetic, crucial for maintaining the vehicle's original design and weather protection.