Genuine OEM Audi Fuel Return Line, part number 8K0201533. This essential component safely returns excess fuel from the engine's fuel system back to the fuel tank, maintaining proper fuel pressure and preventing system overload. It is routed along the underbody, connecting the fuel system to the tank. Weighing approximately 0.133 kg, this genuine OEM fuel return line ensures correct routing geometry, pressure integrity, and resistance to fuel chemicals for optimal engine performance and safety.