Radio Stereo Install Double or Single Din Dash Kit + wire harness + antenna adapter for Audi A4 and RS4 2002 2003 2004 2005 2006 2007 2008 Radio Stereo Install Dash Kit + wire harness + antenna adapter for Audi A4 2002 2003 2004 2005 2006 2007 2008, RS4(05-08) DASH INSTALL KIT + RADIO WIRE HARNESS + FM ANTENNA ADAPTER + Aux Headphone 1/8" Input COMBO KIT (INCLUDES ALL PARTS NEEDED FOR INSTALLATION OF AFTERMARKET RADIO) - ***Includes Aux input RCA to Headphone Cable THE HARNESS (WILL ONLY WORK ON NON PREMIUM - NON AMPLIFIED SYSTEMS) FOR STEREO UPGRADES - REPLACES (FACTORY/OEM/STOCK RADIO TO AFTERMARKET STEREO)