Keep your motor’s lungs fed with clean, energy-rich oxygen from the “the world’s best air filter”—K&N Air Filters. Constructed from pleated sheets of oiled cotton gauze, these air filters strip away grime without blocking airflow. Fully reusable. Million Mile Limited Warranty.
Not sure which 2009 Ford Focus 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:
"Fuel economy was dropping in the Ford Focus; dropped in the K&N and gained 4/10th of a mile per gallon increase, immediately." —Richard P from Crawfordville, FL bought a K&N Air Filters for a 2009 Ford Focus, 2.0L 4-cyl. engine.
"they worth the money and the time spend for cleaning.
visible improvement in acceleration and slightly gain in mileage.
i ll buy again if the shipping it s free" —Cristian P from Austin, TX bought a K&N Air Filters for a 2009 Ford Focus.
"K&N filters have been known for quality. I found the filter for the Focus to be a direct fit." —Jerry P from Perrysville, OH bought a K&N Air Filters for a 2009 Ford Focus, 2.0L 4-cyl. engine.
"According to K&N they do not make a filter for a 2009 Ford Focus. When you look a Fram etc they use the same filter for 2008 and 2009, so you can use a 2008 K&N Filter for your 2009 Ford Focus. The gasket fit tight but it went on ok and works with no problems." —Douglas M from Tonto Basin, AZ bought a K&N Air Filters for a 2009 Ford Focus, 2.0L 4-cyl. engine.