Genuine OEM Audi Engine Coolant Hose, part number 4KE819374B. This essential hose is responsible for circulating coolant throughout the engine cooling system, playing a vital role in regulating engine temperature. Its specific curved design ensures correct routing and connection to a valve assembly near the radiator. Made from durable, heat-resistant rubber, it measures approximately 0.105 meters in length and weighs 0.033 kg. Choosing a genuine OEM coolant hose ensures a perfect seal, resistance to temperature extremes, and long-term reliability, preventing leaks and maintaining engine health.