Genuine OEM Audi Fuel Overflow Return Line, part number 03L130235AE. This critical component is designed to return excess fuel from the engine's fuel rail or injectors back to the fuel tank, maintaining proper fuel system pressure and preventing overflow. It is a lightweight assembly, weighing 0.082 kg. Using a genuine OEM fuel line ensures correct material composition for fuel compatibility and precise connections, preventing leaks and ensuring safe, efficient fuel delivery.