Genuine OEM Volkswagen Water Drainage Hose, part number 11A877203. This hose is designed to channel water away from the panoramic roof system, preventing interior leaks and potential water damage. It is located at position 21 in the diagram. The part measures 1.45m in length, 0.045m in width, and 0.03m in height, weighing 0.137 kg. Genuine OEM water drainage hoses are constructed from high-quality, weather-resistant materials to ensure reliable performance and prevent premature failure.