Keep your motor’s lungs fed with clean, energy-rich oxygen from the “the world’s best air filter”—K&N Air Filters. Constructed from pleated sheets of oiled cotton gauze, these air filters strip away grime without blocking airflow. Fully reusable. Million Mile Limited Warranty.
Say goodbye to the days of re-oiling your reusable performance filter—innovative aFe Pro-Dry S Air Filters boast a 100% oil-free cotton gauze construction for wicked airflow. Easy to clean and reuse. The Pro-Dry S Air Filter is backed by a Lifetime Warranty.
Steer clear of oil-soaked upgrades and make the switch to AEM DryFlow Air Filters. Boasting an oil-free polyester synthetic material, these performance air filters ensure ample airflow, enhanced protection and easy maintenance. Custom sized. Lifetime Limited Warranty.
Not sure which 2012 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:
"Unlike other cars I've installed drop in filters in this one is a tight fit and requires the air box cover to be forced on a little bit. When I measured the length against the original one the K&N is about a quarter of an inch longer. I put it in anyway but I may take it out and trim a little off the side that fits on the intake side of the air box." —Jim N from Scranton, PA bought a K&N Air Filters for a 2012 Ford Focus, 2.0L 4-cyl. engine.
"excellent product overall better than expected car already getting better milage" —James F from Cape Coral, FL bought a K&N Air Filters for a 2012 Ford Focus, 2.0L 4-cyl. engine.
"Not the first, not the last vehicle I will put a K&N filter in. Great product, and keeps me from filling up the landfills too." —Eric R from Perryton, TX bought a K&N Air Filters for a 2012 Ford Focus.
"I installed this on my wife's car. It sounded great, and after the second tank of gas, we noticed about 2 mpg difference. I have K&N on all my vehicles. LET THE AIR IN !" —Barry T from Louisa , VA bought a K&N Air Filters for a 2012 Ford Focus, 2.0L 4-cyl. engine.
"The Ford Focus 1012 Titanium OEM filter is the same size and shape but cannot be cleaned." —Pedro A from Fresno, CA bought a K&N Air Filters for a 2012 Ford Focus, 2.0L 4-cyl. engine.
"I did get an improved snappiness in performance. There was no noticeable added horsepower or improvement fuel economy in my particular application (2012 Ford Focus)." —David H from Milledgeville, GA bought a K&N Air Filters for a 2012 Ford Focus.
"I've been using K&N filters in my vehicles for 15 years and have always been satisfied with the product. One of the first things I did when I got my new 2012 Focus home was to change the Filter to a K&N." —Frank E from Macomb, MI bought a K&N Air Filters for a 2012 Ford Focus, 2.0L 4-cyl. engine.
"When I opened my shipment box the filter had a few small dents which I was able to pinch and straighten out for the most part. I noticed an immediate improvement in throttle response and less surging at all speeds. My mileage has improved from 29.1 to 30.8 (may not be fair as the engine only had 538 miles on it new when I installed the K&N filter) but I've had good luck in the past that's why I bought another." —Michael M from Waterford, CT bought a K&N Air Filters for a 2012 Ford Focus, 2.0L 4-cyl. engine.
"i noticed better performance and fuel savings. it was worth the purchase price." —June V from Tamaqua, PA bought a K&N Air Filters for a 2012 Ford Focus.
"Really like this filter. Was a little tight to get in, but fits well. Not sure about HP or MPG improvements, but its a great upgrade." —Arnold C from Greeley, CO bought a K&N Air Filters for a 2012 Ford Focus.
"Installed into my new 2012 Ford Focus SEL and boy do I love the sound! On a recent trip I got 41 MPG instead of 39 before installation." —Mark S from Endwell, NY bought a K&N Air Filters for a 2012 Ford Focus, 2.0L 4-cyl. engine.