Not sure which 2009 Audi A4 Air Filters are right for you? We have over 14810 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"Installed in Audi a4 b8 and works very well. Haven't had to clean it yet but overall excellent product!" —Mike S from Larsen, WI bought an aFe Pro-Dry S Air Filters for a 2009 Audi A4, Turbocharged 2.0L 4-cyl. engine.