Genuine OEM Volkswagen Coolant Hose, part number 5N0122157AH. This hose is a critical component in the engine cooling system, responsible for transporting coolant between various components to maintain optimal engine operating temperature. Measuring 0.45m in length and weighing 0.318 kg, it is designed for precise routing and connection. Using a genuine OEM coolant hose ensures the correct material composition and resistance to heat and pressure, preventing leaks and maintaining system integrity.