Genuine OEM Volkswagen Coolant Hose, part number 5Q0122157AT. This vital component is designed to transport engine coolant, ensuring proper temperature regulation for optimal engine performance. It features an integrated coupling for a secure and leak-free connection within the cooling system, typically connecting to the thermostat housing or water pump. Weighing approximately 0.646 kg, using a genuine OEM hose guarantees the correct routing, material composition, and pressure resistance, which are crucial for preventing leaks and maintaining cooling system integrity.