- A high-flow, washable filter that delivers the maximum amount of air possible into your engine while providing superior filtering
- Multiple layers of cotton fabric sandwiched between pleated aluminum screen capture airborne dirt particles
- Improves horsepower and torque
- Emission legal in all 50 states, will not void manufacturer’s warranty
- Filters can be cleaned over and over, and are backed by a million mile limited warranty
Product Description
K&N’s lifetime replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. The air filter is custom-designed to fit into your existing factory air box and the drop-in design means adding performance is simple. The unique design of the air filter features multiple layers of cotton fabric which capture airborne dirt particles. The filter is washable and reusable and can be easily cleaned and oiled. It lasts up … More >>
K&N 33-2304 Replacement Air Filter
#1 by M. BELKO on February 8, 2010 - 5:33 pm
bought this for my 09 Subaru Impreza and I have had it in for about a week,I have noticed a slight increase in power and acceleration but havent really noticed any gas mileage improvement in city driving but noticed a slight improvement in gas mileage on highway driving.ive used K&N in V-8 cars ive owned and noticed the power difference so I would recommend this to anyone who wants a little more power and wants too keep there car basically stock and not install a cold air intake type system and possibly void warranty.the filter fit perfectly and was very easy to install with just a screwdriver
Rating: 4 / 5
#2 by Mark Crandell on February 8, 2010 - 7:39 pm
I recommend this product, but only experienced 1mpg improvement in city driving, not sure if it made any difference on highway driving. Fit was perfect and I like the idea that I can wash the filter and not worry about buying a new one. My car is a Subaru Impreza 2.5i 2008
Rating: 5 / 5
#3 by John Resciniti on February 8, 2010 - 7:54 pm
It’s cool. Does what it’s supposed to do. I have the FIPK for my Explorer, but it wasn’t available for my Suby, so I just got the replacement filter. I can’t say I’ve noticed a difference in economy or performance, but having a washable/ reusable filter is what I wanted. This is it.
Rating: 4 / 5
#4 by Russell J. Wilson on February 8, 2010 - 8:30 pm
All 3 of our cars now have K & N filters.
Just not a better choice.
Over the years use of K&N filters have saved me lots of $$$$.
When we bought our new car it was my fist extra purchase / investment to prolong the life of the car. I’ve had a K&N in my truck for 14 years and the engine still runs like a champ. Easy to clean and re-charge..
The only Warning I have is make sure you put the K&N sticker that comes with the filter on the air intake.. My wife once took our car in for an oil change.. The attendant was new and replaced the air filter.. There went the K&N, by the time I found out the filter was either in his car or the land fill. My wife is now aware all our cars have K&N’s
Rating: 5 / 5
#5 by Dan Kuttner on February 8, 2010 - 8:54 pm
Zip, Zip, Zip! My 2005 Outback XT has some extra ZIP! I have also logged 2mpg better mileage(pretty good considering all the extra zipping!). Fit perfectly and took 5 minutes, including the time it took to find a screw driver.
Service was great- free shipping & I got it 3 days earlier than projected!
Rating: 5 / 5