Replacement Air Filter
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K&N Replacement Air Filter

Part No. 33-2251 Warranty Details  

See if this part fits a specific vehicle.

Check Vehicle Fit

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:1 in
Material:Cotton Gauze
Outside Length:13.375 in
Outside Width:11.125 in
Shape:Panel

REVIEW SNAPSHOT®

by PowerReviews
K&NReplacement Air Filter
 
4.0

(based on 5 reviews)

Ratings Distribution

  • 5 Stars

     

    (3)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (1)

80%

of respondents would recommend this to a friend.

Pros

  • High-performance (4)

Cons

No Cons

Best Uses

  • Large cars (3)
    • Was this a gift?:
    • No (3)

Reviewed by 5 customers

Displaying reviews 1-5

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4.0

Perfect Fit

By 

from New Jersey

About Me Casual Driver

See all my reviews

Verified Buyer
3 or more reviews submitted

Pros

  • High-Performance

Cons

    Best Uses

    • Large Cars

    Comments about K&N Replacement Air Filter:

    Easy to install, better than OEM.

    • Was this a gift?:
    • No

    Comment on this reviewHelp Icon

     
    5.0

    worth the money

    By 

    from Indianapolis,IN

    About Me Auto Enthusiast, Casual Driver, Truck Enthusiast

    Verified Buyer

    Pros

    • Durable
    • Easy To Use
    • High-Performance

    Cons

      Best Uses

      • Large Cars
      • Small Cars
      • Trucks

      Comments about K&N Replacement Air Filter:

      like it

      • Was this a gift?:
      • No

      Comment on this reviewHelp Icon

       
      5.0

      RE: Jim from VA

      By 

      from Denver, CO

      Pros

      • High-Performance
      • Less Air Restriction
      • Longer Life of Filter

      Cons

      • Messy to clean

      Best Uses

      • All of the above
      • Large Cars
      • Small Cars
      • Trucks

      Comments about K&N Replacement Air Filter:

      RE: jim's comments about dirtying the engine. Tests have been done using many times the normal amount of oil on the filter and shown to have no affect on sensors or engine dirt. [...]properly oil the filter. Even when that is done, the filter does not foul sensors.Increased airflow gives increased efficiency. But it's not going to turn a 15MPG car into 50MPG car.

      • Car & Truck:
      • Auto Enthusiast
      • Was this a gift?:
      • No

      Comment on this reviewHelp Icon

      (1 of 2 customers found this review helpful)

       
      1.0

      Don;t waste your money

      By 

      from VA

      Pros

        Cons

        • Junk

        Best Uses

        • None

        Comments about K&N Replacement Air Filter:

        K&N filters allow more dirt to enter a engine and have been shown to dirty and sometimes damage sensors.
        They will not offer any major gas milage or performance gains.

        • Car & Truck:
        • Mechanic

        Comment on this reviewHelp Icon

        (2 of 4 customers found this review helpful)

         
        5.0

        Awesome Product!!!

        By 

        from Houston

        Verified Buyer

        Pros

        • Durable
        • Easy To Use
        • High-Performance

        Cons

          Best Uses

            Comments about K&N Replacement Air Filter:

            Really a great product if you're looking to save on gas. I'm getting an additional 2mpg; not to mention probably around 7-10 extra HP. Awesome!! Definitely improves acceleration for those spirited drivers!!!

            • Car & Truck:
            • Auto Enthusiast

            Comment on this reviewHelp Icon

            Displaying reviews 1-5

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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.