Not sure which 2003 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:
"there great e-z to install get about 2 mpg on hwy. I dont have to be buying air filters everytime to expensive" —Leonardo G from Mission, TX bought a K&N Air Filters for a 2003 Ford Focus.
"I actually checked to see if my car had stalled at the intersection. That indicates how quiet my idle speed is after installing the K&N filter. I should have done this thousands of miles ago." —Chris P from Denver, CO bought a K&N Air Filters for a 2003 Ford Focus, 2.0L 4 cyl. engine.