Genuine OEM Volkswagen Coolant Hose, part number 5QF121086A. This hose connects components within the engine's cooling system to facilitate the flow of coolant. It is located at position 10 in the cooling system assembly. The hose has a length of 0.34 meters. Genuine OEM coolant hoses are manufactured to exact specifications to ensure proper coolant flow and prevent leaks, maintaining optimal engine temperature.