Replacement Air Filter
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K&N Replacement Air Filter

Part No. 33-2399 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 virtually every vehicle on the road. These filters are washable and reusable

Product Features:
  • 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:7.125 in
Outside Width:6.625 in
Shape:Panel

REVIEW SNAPSHOT®

by PowerReviews
K&NPanel Type Cotton Gauze Air Filter
 
4.9

(based on 8 reviews)

Ratings Distribution

  • 5 Stars

     

    (7)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

86%

of respondents would recommend this to a friend.

Pros

  • Durable (7)
  • High-performance (7)
  • Easy to use (6)

Cons

No Cons

Best Uses

  • Large cars (4)
  • Small cars (4)
  • Trucks (4)
    • Reviewer Profile:
    • Auto enthusiast (3)
    • Was this a gift?:
    • No (4)

Reviewed by 8 customers

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Displaying reviews 1-8

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(4 of 7 customers found this review helpful)

 
5.0

K&N never fails

By 

from CT

About Me Auto Enthusiast

Verified Buyer
Helpful Reviewer

Pros

  • Always Fit Perfectly
  • Durable
  • Easy To Use
  • High-Performance

Cons

    Best Uses

      Comments about K&N Panel Type Cotton Gauze Air Filter:

      I buy K&N air filters for all my cars/trucks and have never been disappointed. Yeah, they might be a little expensive but you never have to buy another one and you save about 10-20 air filters from the landfill

      • Was this a gift?:
      • No

      Comment on this review(earn points)

      (5 of 12 customers found this review helpful)

       
      5.0

      Highly recommended by car enthusiasts

      By 

      from Abingdon, MD

      About Me Casual Driver

      Verified Buyer
      Helpful Reviewer

      Pros

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

      Cons

      • Cost

      Best Uses

      • Large Cars
      • Small Cars
      • Trucks

      Comments about K&N Panel Type Cotton Gauze Air Filter:

      I have heard only good things about this filter. While it is expensive, I hope to recover the cost through the product's longevity.

      • Was this a gift?:
      • No

      Comment on this review(earn points)

      (6 of 13 customers found this review helpful)

       
      5.0

      Great product

      By 

      from Boca Raton,Florida

      About Me Auto Enthusiast

      Verified Buyer
      Helpful Reviewer

      Pros

      • High-Performance

      Cons

        Best Uses

          Comments about K&N Panel Type Cotton Gauze Air Filter:

          Defenitly great improvement,perfect fit

          • Was this a gift?:
          • No

          Comment on this review(earn points)

          (7 of 11 customers found this review helpful)

           
          5.0

          Another high quality K&N filter.

          By 

          from Williamsburg, VA

          About Me Auto Enthusiast

          Verified Buyer
          Helpful Reviewer

          Pros

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

          Cons

            Best Uses

            • Large Cars
            • Small Cars
            • Trucks

            Comments about K&N Panel Type Cotton Gauze Air Filter:

            2008 Infiniti G37S.

            • Was this a gift?:
            • No

            Comment on this review(earn points)

            (9 of 14 customers found this review helpful)

             
            4.0

            As expected

            By 

            from Massachusetts

            Verified Buyer
            Helpful Reviewer

            Pros

            • As advertised
            • Durable
            • Easy To Use
            • High-Performance

            Cons

            • None

            Best Uses

              Comments about K&N Panel Type Cotton Gauze Air Filter:

              Easy- straight "drop in" fit.
              Wife's car, made her do it - still married!!!

              Comment on this review(earn points)

              (8 of 15 customers found this review helpful)

               
              5.0

              Great Product!!

              By 

              from NJ

              Verified Buyer
              Helpful Reviewer

              Pros

              • Durable
              • Easy To Use
              • High-Performance

              Cons

                Best Uses

                • Large Cars
                • Small Cars
                • Trucks

                Comments about K&N Panel Type Cotton Gauze Air Filter:

                Improved air intake. Too early to measure MPG difference.

                • Car & Truck:
                • Auto Enthusiast

                Comment on this review(earn points)

                (8 of 15 customers found this review helpful)

                 
                5.0

                fit like a glove (Not OJ's)

                By 

                from Los Angeles

                Verified Buyer
                Helpful Reviewer

                Pros

                • Durable
                • Easy To Use
                • High-Performance

                Cons

                • None so far

                Best Uses

                • All makes

                Comments about K&N Panel Type Cotton Gauze Air Filter:

                No need to replace just clean every 30-50K. Product fit into air filter container with no problems.

                • Car & Truck:
                • Casual Driver

                Comment on this review(earn points)

                (5 of 12 customers found this review helpful)

                 
                5.0

                Last filter I will ever buy for this car

                By 

                from Westfield ,ma

                Ask me a question

                Verified Buyer
                Level 3

                Pros

                • Durable

                Cons

                  Best Uses

                  • Large Cars
                  • Small Cars
                  • Trucks

                  Comments about K&N Panel Type Cotton Gauze Air Filter:

                  K&N put out a great product and the 1,000,000 mile replacement means I will never need to buy another filter for this car again. Just a quick cleaning every 50,000 and good to go.

                  • Car & Truck:
                  • Auto Enthusiast, Mechanic

                  Comment on this review(earn points)

                  Displaying reviews 1-8

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                  Do you have questions about this product?(earn points for answers!)

                   

                  Ask a question, get answers from real customers and in-house experts. Or contact Customer Care by email or call 1-877-238-2623.

                  3 Questions | 3 Answers
                  Displaying questions 1-3
                  • Q:

                    Hi..do I need to buy oil or the spray for this filter? Can I clear filter with water once needs to clear ?
                    Asked on 8/1/2014 by Nate

                    1 answer

                    • CUSTOMER CARE

                      A:

                      I'd be happy to help you with that! You would need the cleaning kit in order to properly clean and oil it. The filters come pre-oiled when purchased new. You have to apply the filter cleaner first, then you wash out the dirt with water. The cleaner is Part Nnumber 99-0621 and the oil is Part Number 99-0516. When you pull up the product page for either of those parts, there is an instructional video on the page which will show you the cleaning process.

                      Answered on 8/4/2014 by Anonymous
                  • Q:

                    Will this air filter increase HP to my 2009 Infiniti G37S
                    Asked on 1/29/2012 by RROUI!#

                    1 answer

                    • CUSTOMER CARE

                      A:

                      Yes, this K&N Panel Type Cotton Gauze Air Filter with part# 33-2399 fits your 2009 Infiniti G37 Sport and K&N recommends these air filters as that are designed to increase horsepower and acceleration while providing excellent filtration.

                      Answered on 1/30/2012 by Vincent from AAP
                  • Q:

                    does this engine filter come with 2 or 1
                    Asked on 9/30/2011 by Anonymous

                    1 answer

                    • CUSTOMER CARE

                      A:

                      It is sold individually.

                      Answered on 9/30/2011 by Dennis from AAP
                  Displaying questions 1-3

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