Genuine OEM Citroen Radiator Water Inlet Hose, part number 9818259380. This essential component of the engine cooling system is responsible for directing hot coolant from the engine into the radiator for cooling. It ensures a continuous flow of coolant, maintaining optimal engine operating temperatures. The hose is designed with specific bends and connections to fit precisely within the engine bay. Choosing a genuine OEM hose guarantees the correct internal diameter, material composition, and resistance to thermal cycling and pressure, preventing leaks and ensuring reliable performance.