Genuine OEM Volkswagen Additional Coolant Cooler Hose, part number 3Q0121051. This hose is specifically designed to connect to an additional cooler within the engine's thermal management system, facilitating efficient coolant circulation and temperature regulation. It is part of the auxiliary cooling circuit. Weighing 0.139 kg and measuring 0.31 m in length, this hose is engineered for precise routing. Opting for a genuine OEM hose ensures the correct material composition, resistance to high temperatures and pressures, and exact fitment for a leak-free and durable cooling system.