Genuine OEM Audi Coolant Hose, part number 8K0145921K. This essential hose is responsible for transporting coolant throughout the engine cooling system, maintaining the engine's operating temperature. It is specifically designed for the left side of the vehicle's cooling assembly, connecting key components like the radiator or expansion tank. Weighing approximately 0.18 kg and measuring 0.44 m in length, it is a robust component. Choosing a genuine OEM coolant hose ensures precise fitment, resistance to high temperatures and pressures, and long-term leak-free performance.