Genuine OEM Hyundai Lower Radiator Hose, part number 25415J9100. This critical reinforced rubber hose transports cooled coolant from the radiator back to the engine, completing the cooling system circuit. It is positioned as a lower hose in the engine cooling system. Using a genuine OEM radiator hose ensures the correct routing geometry, material composition, and heat resistance, preventing leaks and maintaining optimal engine operating temperatures.