Fit For： 1999-2004 Audi A6 1999-2004 Audi A6 Quattro 2001-2005 Audi Allroad Quattro 2003-2004 Audi RS6 2002-2003 Audi S6 Specification： Provide optimum heat transfer. Long-lasting, efficient performance. Expert design and manufacture. Built to high quality standards. Types:HVAC Heater core Package Include:1X Heater Core What is a car HVAC Heater Core？ The heater core is a heat exchanger located inside the HVAC loop after the evaporator and the ventilation blower. It is an air/water heat exchanger, so it uses the energy of the engine cooling liquid to increase the cabin temperature. .
