Genuine OEM Audi Auxiliary Heater Coolant Return Hose, part number 4G1265371B. This hose is specifically designed to return coolant from the auxiliary heater to the main cooling system, playing a vital role in the vehicle's heating and climate control functions. It is a critical component in the auxiliary heating circuit. Weighing approximately 0.167 kg and measuring 0.5 m in length, this hose is manufactured to exact factory specifications, ensuring proper routing, leak-free connections, and resistance to temperature and pressure fluctuations for reliable auxiliary heater performance.

Catalogue entry: HOSE return.