The "RADIATOR HOSE UNDERSIDE OT" for the Citroen ID/DS models until 1965 is a critical component for engine cooling. It facilitates the efficient circulation of coolant from the radiator to the engine, preventing overheating. Designed for models manufactured before 1965, this hose is positioned low in the cooling system to ensure optimal performance. Made from durable materials, it withstands high temperatures and pressures. Proper connection and condition of this hose are essential for maintaining engine performance and ensuring the driving quality of your classic Citroen.