Genuine OEM Volkswagen Transmission Breather Line, part number 09P301472D. This component is designed to allow internal gases and pressure to vent from the transmission assembly, preventing pressure buildup that could damage seals. It is positioned on the upper section of the transmission housing. Weighing only 0.031 kg, this lightweight line ensures proper ventilation without adding significant mass. Choosing a genuine OEM breather line ensures correct material flexibility and precise connection points, which are crucial for maintaining optimal transmission performance and preventing fluid leaks.