K&N High Flow Air Filter - Subaru Models (inc. 2002-2007 WRX/STi / 1990-2004 Legacy)
Manufacturer Part # 33-2232
Bundle Savings:MSRP: $84.29
Making over 1,200 different replacement air filters for virtually every vehicle on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace it with a K&N.
K&N stock replacement air filters for street vehicles are covered by the famous K&N Million-Mile Limited Warranty™ and will be THE LAST AIR FILTER YOUR VEHICLE WILL EVER NEED.
RallySport Guarantee - 30 Days
Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.
RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.
The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
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Easy filter upgrade
alezial 4 years ago
Great! Easy! Fast! No noise increase, does the job I need at a price I can manage. Easy to install... trick is to hold this in place in the top half of the air box and then put them in place together... slipped right in.
Gclark94903422 4 years ago
I installed this in my 07 WRX and it is just too thick around the edges to easily install. I really had to fight to get the two lower tabs to engage. Now, one year later I just noticed the plastic tabs on my air box are cracked from the stress.
z.p57851 4 years ago
K&N has always made good products - this is no different. I've got a 3 Catless header-back exhaust with a stage 2 tune, and the butt-dyno says that this helps to even out the air flow. Haven't had it long enough to speak towards its lifespan, but they're washable/reusable so it's a moot point. Would recommend.
redwarblade26426 4 years ago
I noticed an IMMEDIATE difference after installing this. There was more power all around. My car pulls harder in fifth and can handle cruising at lower revs in all gears. Additionally I had some bucking and drivability issues at low speeds in first, this has almost totally eliminated them. Unbelievable how big of a difference this made!
QUESTIONS & ANSWERS
Q: Tune with catless up pipe? redwarblade26426 4 years agoAnswer
If I have a catless up pipe in a 2002 wrx will installing this require a retune?
A: Tune is not required.
Kyle A. 4 years ago
Q: Tune for this? redwarblade26426 4 years agoAnswer
If I install one of these will I need to retune the ECU?
A: No re tune required.
Kyle A. 4 years ago
Q: Stock Filter tempemail55a97effcaae5282028d51b7 4 years agoAnswer
This filter can replace my stock filter? What's the difference from my stock filter being dry and this one being wet?
A: Yes, this will replace your OEM filter. With this being a wet filter, it will be oiled. The oil is what helps filter outside particles from coming into the engine.
Brady R. 4 years ago
Q: Horsepower JamesCarroll 5 years agoAnswer
Will this actually add any horse power? And what happens if I get oil on the MAF?
A: You will gain power by replacing your stock air filter with a high flow filter. If the MAF sensor gets oil on it, then it will not read correctly and will cause the car to run poorly. You can clean the MAF sensor and you won't have any problems as long as you don't over oil the filter.
Zach G. 5 years ago