Genuine OEM Audi Engine Coolant Hose, part number 4G0819337C. This hose is designed to circulate coolant within the engine's thermal management system, crucial for regulating engine temperature and preventing overheating. It is positioned as a key component in the engine cooling circuit. Weighing 0.074 kg and measuring approximately 17.5 cm in length, it is engineered for specific routing and pressure. Choosing a genuine OEM hose ensures the correct material composition and precise routing geometry, preventing leaks and maintaining system integrity under thermal stress.