Genuine OEM Audi HVAC Heater Coolant Hose, part number 7L0815994. This hose circulates coolant to the heater core, providing essential cabin heating. It is a critical component within the vehicle's heating and ventilation system. Weighing 0.164 kg and measuring 0.34 m in length, this hose is designed for exact routing and connection. Genuine OEM hoses are engineered with specific materials and reinforcements to withstand extreme temperatures and pressures, preventing leaks and premature failure common with aftermarket alternatives, ensuring consistent cabin comfort.