Genuine OEM Audi Headlight Hose, part number 4K8941717. This pre-formed hose is located on the left side and is designed to supply either fluid or air to the headlight system, depending on its specific function (e.g., headlight washer fluid or adaptive lighting air supply). Its precise routing and durable material ensure efficient and leak-free delivery. Using a genuine OEM hose guarantees the correct routing geometry and resistance to environmental factors, which is crucial for maintaining the proper function and reliability of the vehicle's lighting system.