Genuine OEM Kia Oil Cooler Hose, part number 2547103800. This critical component is part of the engine's cooling system, designed to transfer hot engine oil to the oil cooler for temperature regulation and then return cooled oil to the engine. It connects directly to the oil cooler assembly. Using a genuine OEM hose ensures the correct routing geometry, material composition, and pressure resistance, vital for preventing leaks and maintaining efficient oil cooling.