Filter Filters 400 Series Audi Remove All Filters Price $50-$100 (1) $100-$500 (3) Condition New (4) Brand Harmony Audio (3) Kicker (1) Audi 400 Series 1980-1987 Factory Speaker Upgrade Kicker DSC4 DSC5 Package New $129.98 Compatible with Audi 400 Series 1980-1987 Factory Speaker Replacement Kicker... $234.99 Compatible with Audi 4000 Series 1980-1987 Factory Speaker Replacement... $200.99 Audi 4000 Series 1980-1987 Factory Speaker Upgrade Harmony R4 R5 Package New $72.99