Genuine OEM Volkswagen Coolant Hose with Coupling, part number 5WA122051B. This critical hose is designed to transport coolant efficiently throughout the engine cooling system, maintaining optimal engine operating temperatures. It connects various components within the cooling circuit, including the radiator. Weighing approximately 0.43 kg, this hose features integrated couplings for a secure and leak-free connection. Opting for a genuine OEM coolant hose guarantees the correct material composition for heat and pressure resistance, precise routing geometry, and durable couplings, preventing leaks and ensuring reliable engine cooling.