Genuine OEM Volkswagen fuel line, part number 04C133723DN. This line is responsible for the transport of pressurized fuel between components in the fuel injection assembly. It is engineered to maintain structural integrity under high-pressure conditions. Genuine OEM fuel lines are manufactured with exact routing geometry and high-grade materials to ensure a vibration-free fit and long-term resistance to fuel degradation, which is essential for maintaining a leak-free fuel system.