Genuine OEM Volkswagen Coolant Hose Assembly, part number 5N0122157BL. This assembly is a critical part of the engine cooling system, designed to transport engine coolant between various components and includes integrated couplings for secure connections. It is positioned within the engine bay, connecting multiple cooling system elements. Weighs 0.3583 kg and measures 0.61m in length. An authentic OEM coolant hose assembly ensures precise routing, correct material resistance to heat and coolant, and reliable, leak-free connections, vital for preventing overheating.