Genuine OEM Kia Upper Radiator Hose, part number 25415D3500. This critical component is responsible for transferring hot coolant from the engine to the top inlet of the radiator, where it can be cooled. It is positioned in the upper section of the engine cooling system. Made from durable, heat-resistant rubber, this hose is designed to withstand high temperatures and pressures. Weighing approximately 0.7 kg and measuring about 0.75 meters in length, its specific molded shape ensures correct routing and fitment. Using a genuine OEM hose guarantees the correct material composition, precise routing geometry, and resistance to thermal cycling and coolant chemicals, preventing leaks and ensuring long-term cooling system integrity.