Genuine OEM Audi / Seat Vacuum Hose, part number 03L131055CN. This vacuum hose is a component of the engine's emissions or intake control system, responsible for transmitting vacuum signals to various actuators. It is marked as number 24 in the diagram. The hose has a length of approximately 0.45 meters. Genuine OEM hoses are manufactured with specific material properties to resist heat, oil, and vacuum pressure, ensuring reliable operation of emission control systems.