Genuine OEM Volkswagen Coolant Hose, part number 5WA121053C. This flexible, corrugated hose is a critical component of the engine cooling system, responsible for transporting hot and cooled coolant between various engine components and the radiator. It is designed to withstand high temperatures and pressures, ensuring efficient heat exchange and maintaining optimal engine operating temperatures. Weighing 0.404 kg, this hose is engineered for specific routing and connections. Using a genuine OEM coolant hose ensures the correct material composition for resistance to heat and coolant chemicals, precise dimensions for a leak-free fit, and long-term durability, preventing coolant leaks and engine overheating.