Genuine OEM Volkswagen Coolant Hose With Coupling, part number 5QS122101H. This hose is designed to transport coolant throughout the engine's cooling system. It features a quick-release mechanism for easy connection and disconnection. The hose is made of durable rubber and plastic components. Genuine OEM hoses ensure precise fitment and material integrity, crucial for preventing leaks and maintaining the cooling system's efficiency under high temperatures and pressures.