Filter Filters Audi S4 Remove All Filters Price $50-$100 (1) $100-$500 (1) Condition New (2) Brand Harmony Audio (1) Kicker (1) Audi S4 2002-2008 Factory Speaker Replacement Harmony R5 R65 Coax Package New $83.99 Audi S4 2002-2008 Factory Speaker Replacement Kicker DSC5 DSC65 Coax Package New $149.98