Genuine OEM Volkswagen Lower Water Radiator Hose, part number 5Q0122051EB. This critical component is responsible for circulating coolant, transferring heat from the engine to the radiator to maintain optimal operating temperatures. It is typically positioned as the lower hose connecting the radiator to the engine, on the right side of the engine bay. Made from durable, heat-resistant rubber with integrated plastic connectors, it weighs approximately 0.668 kg. Using a genuine OEM hose ensures the correct routing geometry, material composition, and resistance to engine fluids and temperatures for reliable, leak-free performance.