Not sure which 2013 Ford Focus 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 filters in all of the cars I've owned for over 10yrs. They are high quality and give a long service life with cleaning and re-oil every 25,000 miles. I can't say I can feel any power gains compared to factory OEM filter. You may see 3-4 HP over OEM filters which is very minimal. I don't trust most of the open cold air intakes available and prefer using factory air box." —Tim S from Nixa, MO bought a K&N Air Filters for a 2013 Ford Focus.