Genuine OEM Volkswagen Coolant Hose, part number 7E0121086S. This essential hose is responsible for transporting coolant throughout the engine cooling system, playing a critical role in regulating engine temperature and preventing overheating. It is integrated into a complex network of hoses within the engine bay. Weighing 0.169 kg, this hose is designed for durability and heat resistance. Choosing a genuine OEM coolant hose ensures the correct material composition, precise routing, and resistance to thermal cycling, which are vital for preventing leaks and maintaining the longevity of the engine.