Not sure which 2009 Audi A4 Air Filters - Custom Fit is right for you? We have over 14143 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:
"Great looking design with an easy installation. add in the fact that it will last a lifetime and it is a great purchase." —Stephen K from Winthrop, MA bought a K&N Air Filters for a 2009 Audi A4, Sedan, turbocharged 2.0L 4-cyl. engine.
"I talked to the BMW people about after market
air filters: They do not recommend anything other than original equipment:
I believe this filter is far superior to EOM." —Jeremy C from Yarmouth, ME bought a K&N Air Filters for a 2009 Audi A4, S-type, hardtop, 1.6L 4-cyl. Engine.
"Easy to install. Seems to work great for now. Will need more time to do a full evaluation. I've used other K&N products in the past and have gotten great customer service when needed. These are GOOD filters and worth the money." —Richard K from Saugus, CA bought a K&N Air Filters for a 2009 Audi A4.