Genuine OEM Volkswagen Coolant Hose, part number 2K0122051F. This hose transports coolant between engine components and the radiator to regulate engine temperature. It is located in the engine cooling system, specifically at position 12 on the diagram. Made from durable rubber, it ensures reliable fluid transfer. Genuine OEM coolant hoses are manufactured to exact specifications for proper fit and material integrity, ensuring long service life and preventing leaks.