Genuine OEM Audi Engine Heating Hose, part number 4K0819374AC. This flexible hose is a critical component of the vehicle's heating and cooling system, responsible for transporting heated fluid to the heater core for cabin climate control. Its specific design ensures proper routing and connection within the complex fluid network. Weighing 0.126 kg, it measures 0.21m x 0.115m x 0.07m. Using a genuine OEM heating hose guarantees the correct material composition for high-temperature and chemical resistance, along with precise dimensions for a leak-free and durable connection, essential for effective cabin heating.