Genuine OEM Volkswagen Coolant Hose, part number 2H6122157S. This hose is essential for transporting coolant between engine components and the radiator, ensuring proper engine temperature regulation. It is located at position 28 in the diagram. Manufactured from durable rubber, this hose is designed to withstand the high temperatures and pressures of the cooling system. Genuine OEM hoses are critical for maintaining the integrity of the cooling system, preventing leaks and ensuring precise fluid flow.