Not sure which 2001 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:
"Since installation of the K&N Filter I get about 2 additional miles per gallon on road trips. The engine also seems to be more responsive in acceleration." —Bill J from Charlottesville, VA bought a K&N Air Filters for a 2001 Ford Focus.