Replacement Air Filter
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K&N Replacement Air Filter

Part No. 33-2304 Warranty Details  

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K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles 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. See applicable instruction sheet for details. Our stock replacement air filters for street vehicles are covered by our famous K&N Million-Mile Limited Warranty and will be the last air filter your vehicle will ever need.

Product Features:
  • This is the last air filter your vehicle will ever need!
  • Designed to boost horsepower and rate of acceleration
  • Can be cleaned and used again
  • High air flow with exceptional filtration
  • Lasts up to 50,000 miles before cleaning is required depending on driving conditions
  • Works with original equipment manufacturer vehicle electronics
  • Emissions legal in all 50 US states
  • Will NOT void vehicle warranty
  • Million Mile Limited Warranty┬«
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Height:0.938 in
Material:Cotton Gauze
Outside Length:8.75 in
Outside Width:8.563 in
Shape:Panel

REVIEW SNAPSHOT®

by PowerReviews
K&NReplacement Air Filter
 
4.9

(based on 25 reviews)

Ratings Distribution

  • 5 Stars

     

    (23)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Durable (12)
  • Easy to use (11)
  • High-performance (11)
  • Lightweight (3)
  • Versatile (3)

Cons

No Cons

Best Uses

  • Large cars (11)
  • Small cars (9)
  • Trucks (8)
    • Car & Truck:
    • Casual driver (3)
    • Reviewer Profile:
    • Auto enthusiast (7), Casual driver (6)
    • Was this a gift?:
    • No (17)

Reviewed by 25 customers

Displaying reviews 1-10

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5.0

Great buy

By 

from undisclosed

Verified Buyer

Comments about K&N Replacement Air Filter:

Easy install

 
5.0

Very good store and online customer service.

By 

from undisclosed

Verified Buyer

Comments about K&N Replacement Air Filter:

Very good price for K&N air filter. Shopping online at their website was easy after customer service helped resolve some web issues.

 
5.0

I would by again

By 

from undisclosed

Verified Buyer

Comments about K&N Replacement Air Filter:

Experienced more pick up performance, did not notice mileage increase.

 
5.0

K and N in wife's subie

By 

from undisclosed

Verified Buyer

Comments about K&N Replacement Air Filter:

Pimped wifeys ride
Will see if mpg gets better

 
5.0

Won't need to buy again since it's washable

By 

from undisclosed

Verified Buyer

Comments about K&N Replacement Air Filter:

Feels like it added a little pick up, might just be me imagining things. Easy to install, although there are no markings to signify front, top, etc.

 
5.0

Surprisingly good upgrade for '17 WRX

By 

from Ri

Verified Buyer

Pros

  • Driveability
  • Response
  • Sound

Cons

    Best Uses

      Comments about K&N Replacement Air Filter:

      I have a '17 WRX and this was a surprisingly cheap and useful mod. Throttle response and sound both improved. Def helps with the 4K "wall hit", smooths it out a bit.

      • Was this a gift?:
      • No
       
      5.0

      Works better than expected.

      By 

      from North Wales, PA

      Verified Buyer

      Comments about K&N Replacement Air Filter:

      I have had this on the car a few days and I can already see a huge difference in throttle response. Worth the price for sure.

      • Was this a gift?:
      • No
       
      5.0

      The best filter around

      By 

      from G-man

      Verified Buyer

      Comments about K&N Replacement Air Filter:

      Just like everything else you pay for the best

      • Was this a gift?:
      • No
       
      5.0

      5 stars

      By 

      from New Jersey

      Verified Buyer

      Comments about K&N Replacement Air Filter:

      Easy to instal, great price. Wouldn't buy another filter then KN.

      • Was this a gift?:
      • No
       
      5.0

      K&N Replacement Air Filter

      By 

      from Elyria, OH

      About Me Casual Driver

      Verified Buyer

      Pros

      • Durable
      • Easy To Use
      • High-Performance
      • Versatile

      Cons

        Best Uses

        • Large Cars
        • Small Cars

        Comments about K&N Replacement Air Filter:

        This is the first time I purchased a K&N Air Filter. I purchased it because it received good reviews and it's reusable..

        • Was this a gift?:
        • No

        Displaying reviews 1-10

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        Disclaimer We strive to keep all information accurate and up-to-date; however, product availability, pricing, promotions and store hours are subject to change without notice. Please contact Customer Care if you have any questions or corrections.