Genuine OEM Volkswagen Engine Water Coolant Hose, part number 7LA819316. This hose is designed to transport water coolant, playing a critical role in the engine's thermal management system. It is a compact component, weighing approximately 0.034 kg and measuring 0.08 meters in length. Using a genuine OEM hose ensures the correct routing geometry, material composition, and resistance to temperature and pressure fluctuations, preventing leaks and maintaining cooling system integrity.