Genuine OEM Volkswagen Coolant Hose with Quick Coupling, part number 5QF122157BB. This essential hose is responsible for circulating engine coolant, maintaining optimal operating temperatures. It features a quick-release coupling for efficient and secure connection within the cooling system. This hose is integrated into the engine cooling circuit, connecting various components like the radiator or engine block. Weighing approximately 0.32 kg, it is constructed from durable, heat-resistant materials. Using a genuine OEM coolant hose ensures correct routing geometry, material compatibility with coolant, and reliable sealing to prevent leaks and maintain cooling system integrity.