Genuine OEM Volkswagen Breather Line, part number 3QD201931B. This line connects components within the fuel or exhaust system to allow for the passage of air or gases. It is located as part number 2 in the diagram. The line has a length of 1.7m. Genuine OEM parts are crucial for ensuring the correct material composition and precise dimensions required for the safe and effective venting of gases within your vehicle's systems.