Genuine OEM Volkswagen Coolant Hose, part number 5QF122073AG. This hose transports coolant between engine components to regulate operating temperature. It is located at position 25 in the engine cooling system diagram. Made from durable rubber, this hose is designed for precise fitment and long-lasting performance. Genuine OEM coolant hoses ensure correct flow rates and material resistance to heat and pressure, preventing leaks and maintaining engine health.