2011 Audi A4 S4 Single CD Satellite Player Radio Stereo OEM LKQ Type: Others Compatibility: 2011/Audi/A4/Base Sedan 4-Door/2.0L 1984CC 121Cu. In. l4 GAS DOHC Turbocharged::For a 2011 AUDI A4 receiver 2011/Audi/A4 Quattro/Avant Wagon 4-Door/2.0L 1984CC 121Cu. In. l4 GAS DOHC Turbocharged::For a 2011 AUDI A4 receiver 2011/Audi/A4 Quattro/Base Sedan 4-Door/2.0L 1984CC 121Cu. In. l4 GAS DOHC Turbocharged::For a 2011 AUDI A4 receiver 2011/Audi/S4/Base Sedan 4-Door/3.0L 2995CC 183Cu. In. V6 GAS DOHC Supercharged::For a 2011 AUDI S4 receiver 2011/Audi/S4/Base Sedan 4-Door/3.0L 2995CC V6 GAS DOHC Supercharged::For a 2011 AUDI S4 receiver