Genuine OEM Audi Upper Engine Coolant Hose, part number 4M1819337. This essential component is designed to carry coolant efficiently within the upper section of the engine cooling system, ensuring proper temperature regulation. It features a specific routing geometry for left-hand drive (LHD) configurations. Weighing 0.157 kg and measuring 0.433 meters in length, this hose is built to withstand engine bay temperatures and pressures. Opting for a genuine OEM coolant hose guarantees the correct material composition, precise fitment, and resistance to thermal cycling, preventing leaks and ensuring the longevity of your cooling system.