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K&N High Flow Air Filter (Part Number: )
K&N High Flow Air Filter (Part Number: )
K&N High Flow Air Filter (Part Number: )
K&N High Flow Air Filter (Part Number: )
K&N High Flow Air Filter (Part Number: )
K&N High Flow Air Filter
Subaru Models (inc. 2008+ WRX/STI)
Read 19 Reviews | 5 Q&As
Part # 33-2304
$49.99
msrp: $77.99


Ships in 24 hrs

Features & Product Details

The K&N High Flow Panel Filter is a high-performance direct drop in filter that allows your engine to breathe better for improved performance without compromising the filtering capabilities. K&N has been the leaders in filtering technology for many decades and today's products are the result of arduous testing, engineering, and design to perfect a quality filter you can rely on. 

K&N Panel Filters are also serviceable and washable for those of you who perform regular performance to your vehicle. 

Specifications

Brand: KN
Filter Color: Red
Filter Element Type: Wet
Filter Material: Cotton
Filter Reusable: Yes
Mfgr. Warranty: Million Mile
Condition: New Product
Return Policy:

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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REVIEWS & CUSTOMER MEDIA

19 Reviews
4.8 out of 5 Stars
5 Stars
(16)
4 Stars
(3)
3 Stars
(0)
2 Stars
(0)
1 Stars
(0)
Customer Photos and Videos
No user media. You can upload a photo or video of your install by posting a review.
Great product. 4 months ago
rthorniley
Purchased for my 2017 Forester. Fitment was correct. I purchased for the quality and longevity of the filter, as its washable and rechargeable; I wasn't expecting any impact on performance. I can't imagine it increased horsepower much, but the throttle response felt a lot more linear and controllable than stock. Definitely worth the price if you are thinking about it.
  
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 2 years ago
Harry Williams
Easy drop in with the quality K&N have had for years.
  
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Works as advertised 2 years ago
Velcade
This air filter is great so far. Fit just fine, and installed in seconds. Grab yourself a cleaning kit while you're at it and you should be set for the life of the car.
  
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Great air filter! 2 years ago
cheung.austin07972
Rallysportdirect sent the filter quickly! This was an easy installation. The quality of this air filter is unmatched! Immediately after installing I noticed a smoother drive, boost in speed for the turbo on my 11 wrx! Would definitely recommend this air filter for any car!
  
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k&n filter 3 years ago
plukasz2514736
GREAT PRODUCT, really easy to install . make sure to buy the proper cleaning kit for it. love it.
  
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QUESTIONS & ANSWERS

  • Q: 2015 WRX: Just purchased Invidia N1...  WRX 2015 3 years ago

    Just purchased Invidia N1 from you guys. Do you see any benifits from this filter as my air flow from my cat back is 3 inches now? I'm also nervous due to the high amount of negative feedback on using any high performance drop in filters due to access dirt going to your motor as well as the oil issue. Thanks
    • 0 of 0 people found the following answer helpful

      A:  You will see a slight increase in power and response. The issue pertaining to dirt and oil entering the engine is largely overblown in my experience.

      Josh P. @ RallySport Direct 3 years ago  
        
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  • Q: 2014 WRX  draymond3 years ago

    Meaning is it required to have a tune? I see most people equip this without a tune, still under warranty.
  • Q: MAF  mharding945 years ago

    Will the oil in this filter mess up the MAF?
    • 0 of 0 people found the following answer helpful

      A:  It should not, but it is recommended to clean the MAF periodically to avoid issues.

      Nick S. @ RallySport Direct 5 years ago  
        
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  • Q: tune or no tune?  Steelman876 years ago

    I keep getting two different answers to my question. The guys at the local auto store don't know if I need a tune, and the few i'm learning mechanics that i'm learning from say yes for a tune, and some no. I have a 2012 Subaru wrx sedan
    • 0 of 0 people found the following answer helpful

      A:  After doing in house testing, you will want to tune the car to run any drop in filter into the airbox due to increased airflow.

      Kirill C. @ RallySport Direct 6 years ago  
        
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  • Q: Tune needed?  jferrett7 years ago

    Do you need a tune with an accessport when using the high flow drop in filters?
    • 2 of 2 people found the following answer helpful

      A:  For all Subaru's (especially 2008+) it is recommended that you tune for any high performance intake filter. That being said you can run this on your stock tune and have little to no issues.

      guest561671092a8d25a1658c55d3 @
        
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This Part Fits

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