Bought this for my 09 Subaru Impreza and …
Comment posted on K&N 33-2304 Replacement Air Filter by M. BELKO
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
M. BELKO also commented
- 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 - 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 - 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 - 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
Recent comments by M. BELKO
- What is the new home water filter pitcher that fills four reusable bottles?
Filtrete Water StationIt’s about $40.00 but they don’t sell it, you have to “outsource” but walmart does sell it, and you can get extra bottles too!
http://www.walmart.com/ip/3M-Filtrete-Water-Station-Starter-Kit/14860673
- What is the new home water filter pitcher that fills four reusable bottles?
I was looking for the same thing. It’s the 3M Filtrete Water Station. It doesn’t look like it’s sold online yet. - What is the new home water filter pitcher that fills four reusable bottles?
I believe it is; PUR CR-6000 2 stage Oval Water pitcher that has the highest ratings compared to the competition. 5 brands were tested and this one was tops. Brita came in 3rd. - How well do coffee filters cleanse the water?
They just get the big lumps! - How well do coffee filters cleanse the water?
A coffee filter will only “cleanse” water of fairly large particulates like coffee grounds or sand. They won’t stop any chemicals, etc.
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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
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
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
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
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