Genuine OEM Audi Fuel Tank Vent Line, part number 4K0201991BE. This essential component is part of the fuel system, designed to regulate the flow of air into and out of the fuel tank. It plays a critical role in maintaining proper tank pressure, preventing vacuum lock, and ensuring efficient fuel delivery and emissions control. This line measures 1.27 meters in length. Using a genuine OEM vent line guarantees the correct material composition, internal diameter, and routing geometry, which are vital for preventing leaks, ensuring system integrity, and complying with stringent emissions regulations.

Catalogue entry: LINE.