Genuine OEM Audi Fuel Return Hose, part number 4M0201216F. This hose is a vital part of the fuel system, responsible for safely returning excess fuel from the engine back to the fuel tank. It helps maintain optimal fuel pressure and prevents over-pressurization within the system. The hose weighs 0.14 kg and measures 0.45m in length. Using a genuine OEM fuel return hose guarantees the correct material composition, resistance to fuel chemicals, and precise routing geometry, preventing leaks and ensuring the long-term integrity of the fuel system.