Not sure which 2011 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've used K&Ns on my motorcycles for years; when I saw the prices for throw away filters I thought, why not go to K&N for my car & truck? It costs only about 2.5 times as much as the disposable filters; the K&N will require service far less than the others, and the vehicle breaths better. Especially if you keep your vehicles long like me, it's an easy choice." —Dave G from Lake Jackson, TX bought a K&N Air Filters for a 2011 Ford Focus, 2.0L 4-cyl. engine.