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BMC Air Filter No. FB533/08-01 for Audi A4 (8k, B8) 3.0 TDI, 240 PS, 2007 to 2012
Audizine Forums
Audi A4 B8: How to Replace Air Filter | Audiworld
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K&N Air Filter for B6/B7 Audi S4 – Nick's Car Blog
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K & N Performance Air Filter (E-1987) for Audi B8/8.5 A4/A5/S4/S5/Q5/SQ5 - WCT Performance Canada
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