Genuine OEM Volkswagen Transmission Breather Hose, part number 0DD301472B. This hose is an integral part of the transmission system, designed to allow for proper ventilation and prevent pressure buildup within the unit. It connects to a small reservoir, ensuring the transmission can breathe effectively. Weighing approximately 0.061 kg and measuring 0.31 meters in length, using a genuine OEM breather hose guarantees correct material composition and routing, crucial for maintaining transmission health and preventing seal damage from excessive pressure or vacuum.