Genuine OEM Volkswagen Coolant Hose, part number 5C0121062. This hose is essential for transporting coolant between engine components and the radiator, maintaining optimal engine temperature. It is located in the engine cooling system, specifically at position 9 on the diagram. The hose is constructed from durable rubber to withstand high temperatures and pressures. Genuine OEM parts ensure precise fitment and material integrity for reliable cooling system operation.