Genuine OEM Audi Sunroof Water Drainage Hose, part number 8V4877203B. This hose is positioned at the rear of the sunroof assembly, designed to direct accumulated water safely away from the vehicle's interior. Its specific length (1.74 m) and routing ensure efficient drainage and prevent leaks. Using a genuine OEM drainage hose guarantees proper fitment and material durability, preventing water ingress and potential damage to interior components.