Not sure which 2009 Ford Flex 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:
"I have used K&N Air Filters on several of my vehicles over the years. Always a good product and bang for the buck. A new quality disposable filter can cost $25...if you replace it yearly then a K&N pays for itself in two years or less....." —William D from Madison, AL bought a K&N Air Filters for a 2009 Ford Flex, 3.5L V6.