Genuine OEM Kia Oil Cooler Return Hose, part number 256502F000. This critical component is part of the engine's cooling and lubrication system, specifically designed to transport cooled oil from the oil cooler back into the engine. It ensures that the engine maintains its optimal operating temperature by facilitating efficient oil circulation. Made from durable, heat-resistant rubber, it is engineered to withstand high temperatures and pressures. Using a genuine OEM hose guarantees the correct routing geometry, material composition, and resistance to engine fluids, preventing leaks and ensuring the long-term integrity of the oil cooling system.