Not sure which 2003 Ford Focus Air Filters - Custom Fit is right for you? We have over 12082 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 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.
"As soon as i installed the filter and went for a drive i could tell a big diffrence. The car didnt feel like it was laging anymore." —Michael C from El Paso, TX bought a K&N Air Filters for a 2003 Ford Focus.