Genuine OEM Audi Sunroof Drain Hose, part number 8K9877201. This hose is designed to effectively channel water away from the sunroof assembly, preventing leaks and potential water damage to the vehicle's interior. It is typically located at the front of the sunroof system. Made from durable, flexible material, this hose ensures proper drainage. Using a genuine OEM hose guarantees the correct routing, diameter, and material resistance for reliable, leak-free operation.