Genuine OEM Volkswagen Coolant Hose, part number 04E122447BF. This molded rubber hose is an integral part of the engine cooling system, responsible for transporting hot and cold coolant between the engine, radiator, and other cooling components. Its complex shape ensures precise routing and fitment within the engine bay. Constructed from high-quality, heat-resistant rubber, a genuine OEM coolant hose provides excellent durability and resistance to cracking or bursting under pressure and temperature fluctuations, crucial for preventing coolant leaks and engine overheating.