Genuine OEM Volkswagen Radiator Lower Coolant Hose, part number 3C0122051BQ. This critical hose carries cooled engine coolant from the bottom of the radiator back to the engine, maintaining optimal operating temperatures. It features molded bends and integrated connectors for a precise fit. Weighing 0.475 kg, using a genuine OEM hose ensures correct routing geometry, resistance to heat and pressure, and long-term durability against coolant chemicals.