Filter Filters Audi Remove All Filters Price Under $50 (5) Condition New (5) Brand Metra (5) Model A4 (1) Radio Size Single DIN,Double DIN,ISO Mount (2) Double DIN,ISO Mount (1) ISO Mount (1) Single DIN,ISO Mount (1) Kit Material Plastic (5) Metra 99-9100 Single DIN Installation Multi Kit for Audi 1997-1999 A4/A6/A8 &... $16.45 Metra 99-9106 Single DIN Installation Kit for Select 1996-2006 up Audi A4 /... $31.45 Audi A4 2000 2001 2002 2003 2004 2005 w Symphony Aftermarket Stereo Harness... $42.99 Metra 99-9107B Double DIN Installation Dash Kit for 2002-08 Audi A4 / S4 -... $25.95 Metra 99-9105 Double DIN or Single DIN Installation Kit for 2000-2001 Audi A4 $32.29