Order Now Audi Heater Coolant Return Hose / Line 4E1819674C

The HEATER COOLANT RETURN HOSE (OEM Part Number 4E1819674C) is a crucial component designed for a precise fit in various Audi models, including the A8 Quattro (2005-2010) and S8 (2007-2010). This factory-original part channels coolant from the heater valve to the connector, ensuring efficient heat transfer and optimal cabin temperature. Over time, hoses may wear out or become damaged, leading to leaks or inefficient heating. By replacing your old or malfunctioning hose with this authentic OEM part, you restore proper function and reliability to your vehicle’s HVAC system. This part is also known as the HVAC Heater Hose and directly replaces worn components with guaranteed compatibility.