Genuine OEM Volkswagen Coolant Hose, part number 3C0122073FB. This critical component is responsible for carrying engine coolant between various parts of the cooling system, maintaining optimal operating temperatures. It is typically found within the engine bay, connecting the radiator, engine block, or other cooling system components. Made from durable, heat-resistant rubber, it weighs approximately 0.1375 kg. Using a genuine OEM coolant hose ensures the correct routing geometry, pressure resistance, and material compatibility for long-term leak-free performance.