Genuine OEM Audi Heater Hose Coupling, part number 4K0122293EE. This component provides a secure and leak-proof connection between different sections of the heater hoses, facilitating the flow of coolant to the heater core. It is located within the vehicle's heating and air conditioning system coolant lines. This lightweight coupling weighs 0.054 kg and is made from durable, heat-resistant material. Using a genuine OEM coupling ensures proper sealing, resistance to temperature and pressure fluctuations, and prevents coolant leaks, which are critical for HVAC system reliability.