Not sure which 2009 Ford Focus 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:
"We seem to have picked up about three miles per gallon-hard to judge any power increase as the focus is really snappy to start with. Very pleased with the K & N filter." —Wesley H from Quartzsite, AZ bought a K&N Air Filters for a 2009 Ford Focus, 2.0L 4-cyl. engine.