Not sure which 2005 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:
"Before I put the K&N Air Filter on my 2005 F150 I was getting 16.4 mpg. After installing the K&N Air Filter my milage went up to 20.3 mpg and my truck has more power now. I couldn't be happier. This will pay for itself in just a couple months with the price of gas these days." —Chris H from Burleson, TX bought a K&N Air Filters for a 2005 Ford Focus.