Not sure which 2009 Subaru Forester 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:
"Have used K&N Air Filters for many years. I immediately get 2 more miles per gallon and more noticable power. Wouldn't use anything else." —Stephen J from Harrisburg, PA bought a K&N Air Filters for a 2009 Subaru Forester.
"I have K&N lifetime air filters in all of my vehicles. It has helped improve my gas mileage. I save money because I don't have to pay for replacement filters and the associated labor at the dealers. It is much easier to just buy one filter for the life of the car and clean it every 40K or so." —David S from Chesterbrook, PA bought a K&N Air Filters for a 2009 Subaru Forester.
"Saves gas!" —Edward R from Pittsburgh, PA bought a K&N Air Filters for a 2009 Subaru Forester.
"Several of my friends swear by them so I decided to give it a try. So far so good." —Durand S from Hutto, TX bought a K&N Air Filters for a 2009 Subaru Forester.
"great product. really does help on my subaru forrester, ford ranger and grand am gt, not so much on the altima 3.5.it must have been setup for higher than normal air flow to begin with.only time i ever had a problem was when i over oiled one in my ranger, fouled my mas air flow sensor.be clear, i did this on my own, it worked perfectly from the factory, and works fine after i fixed my error.follow the directions. great product." —Barb M from Cleveland, OH bought a K&N Air Filters for a 2009 Subaru Forester.
"Much better than paying for disposable filters constantly. Even better if you keep your car for a long time." —Thomas Z from Marietta, GA bought a K&N Air Filters for a 2009 Subaru Forester.
"As a fan of K & N filter, I have them in all my cars and trucks, they are great, lowest maintence item on any vehicle. Clean them every 25, 000 to 30,000 miles, beats replacement normal filters. Plus the gas saving, okay, you get mayber 1 or 2 better mpg, but it is still a savings. Just install this one in my HEMI, was getting 13.2, now getting average of 14, this is with using the remote start for 5 or 10 minutes in the COLD mornings. Buy one, install it, you will see for yourself, more power, better mph, and no replacement of normal filters." —Carl M from Bellmawr, NJ bought a K&N Air Filters for a 2009 Subaru Forester.