Genuine OEM Volkswagen Gear Housing Breather Assembly, part number 0C8301047G. This component is installed on the gear housing, allowing air to enter and exit to equalize pressure changes caused by temperature fluctuations and fluid movement. Weighing 0.076 kg, its proper function prevents pressure buildup that could lead to seal failure and ensures the longevity of the transmission. The factory design ensures correct airflow and filtration.