Genuine OEM Volkswagen Coolant Hose, part number 05E122447A. This hose is a critical component of the engine's cooling system, responsible for circulating coolant between the engine and other components like the radiator or heater core. It is part of the coolant pipe assembly. Made from heat-resistant materials to ensure durability and prevent leaks under high temperatures and pressures. Genuine OEM coolant hoses are manufactured to precise specifications to maintain optimal engine temperature and prevent overheating.