Genuine OEM Volkswagen Flexible Tube/Hose, part number 420131385N. This component is part of the emissions system, designed to convey gases or fluids between various emission control devices. Its flexible construction allows for routing in tight engine bay spaces. Proper connection and integrity of this hose are essential for the correct functioning of the emissions system and to prevent leaks. Genuine OEM hoses are built to withstand specific temperatures and pressures within the system.