Audi A4 (2004-2007) kombi, subwoofer box (stealth).
BASSER Audi A4 B6/B7 Avant - 10" Prefab Fit-Box Subwoofer Enclosure 15
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Upgrading Speakers for Non-Bose B6/B7 Audi A4 – Nick's Car Blog
Stereo Integrity - Our b7 Audi Avant with our IB-24 subwoofer in the spare tire well. Will be completely stealth when finished. Can't wait! ______ Follow our IG, FB and Twitter and
Audi A4 B7 Bose Soundsystem Speaker Subwoofer Control Unit 8E9035382E | eBay
AUDI A4 B7 AVANT BOSE SUBWOOFER AMPLIFIER SPEAKER FULL SET 8E9035382C | eBay