Genuine OEM Audi Connecting Hose, part number 03C133514AM. This flexible hose is designed to connect various components within the engine system, often serving as a vacuum line or a fuel vapor return line. It is positioned in the engine bay, connecting to the fuel rail/manifold assembly. Measuring 0.44 meters in length, it ensures proper routing and secure connections. Using a genuine OEM hose guarantees the correct material composition for resistance to engine fluids and temperatures, preventing leaks and maintaining system integrity.