Genuine OEM Audi Engine Coolant Hose, part number 1EA121057J. 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 within the engine cooling assembly. Made from durable, heat-resistant rubber, it measures approximately 0.12 meters in length and weighs 0.039 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.