Not sure which 2009 Subaru Forester 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:
"i always buy k&n filters,they are always excellent and i have my piece of mind.i never have to change them.also thanks for the superfast delivery from your guys." —Holger K from Las Vegas, NV bought a K&N Air Filters for a 2009 Subaru Forester, 2.5L 4-cyl. engine.
"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.
"I bought the filter more to improve gas mileage on this car. Anytime an engine can breath easier it will run more efficiently. I'm averaging a combined city/highway of 26-27 mpg. Very pleased and its not broken in yet." —Stephen N from Bean Station, TN bought a K&N Air Filters for a 2009 Subaru Forester, 2.5L 4-cyl. engine.
"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, 2.5L 4-cyl. engine.
"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.