Replacement Air Filter
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K&N Replacement Air Filter

Part No. 33-2399 Warranty  
$59.99
Quantity  Add To Cart

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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

    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

    Sort by

    Displaying reviews 1-8

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    5.0

    K&N never fails

    By BigMikeSlade

    from CT

    About Me Auto Enthusiast

    Verified Buyer
    Level 1

    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)

        (3 of 6 customers found this review helpful)

         
        5.0

        Highly recommended by car enthusiasts

        By Greg -- Not a mechanic

        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)

        (3 of 6 customers found this review helpful)

         
        5.0

        Great product

        By Infiniti

        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)

            (3 of 5 customers found this review helpful)

             
            5.0

            Another high quality K&N filter.

            By PDuck

            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)

              (5 of 8 customers found this review helpful)

               
              4.0

              As expected

              By Private Party

              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)

                (4 of 7 customers found this review helpful)

                 
                5.0

                Great Product!!

                By Z

                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)

                  (5 of 8 customers found this review helpful)

                   
                  5.0

                  fit like a glove (Not OJ's)

                  By Big AL

                  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)

                  (4 of 7 customers found this review helpful)

                   
                  5.0

                  Last filter I will ever buy for this car

                  By Ed O

                  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.

                    2 Questions | 2 Answers
                    Displaying questions 1-2
                    • 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 1-2

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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.