Genuine OEM Audi Engine Water Heating Hose, part number 4G0819332A. This hose is a vital component of the vehicle's heating system, responsible for circulating heated water to provide warmth to the cabin. It connects to a valve assembly and other hoses within the HVAC circuit. Weighing approximately 0.097 kg and measuring 0.14 m in length, this hose is designed for precise fitment. Choosing a genuine OEM heating hose ensures the correct material composition, resistance to high temperatures and pressures, and proper routing, which are vital for efficient and reliable operation of the vehicle's climate control system.