UAC HT 2179C HVAC Heater Core. Fits what vehicles: 2002-2009 Audi A4, 2002-2009 Audi A4 Quattro, 2004-2009 Audi S4, 2007-2008 Audi RS4. HVAC Heater Core. Occasionally, there may be an issue with your item or your order and we will do our best to ensure you are 100% satisfied.
