Panel Type Cotton Gauze Air Filter
Hover over the image to zoom in


K&N Panel Type Cotton Gauze Air Filter

Part No. 33-2129 Warranty  

See if this part fits a specific vehicle.

Check Vehicle Fit

Product Features:
  • High airflow with excellent filtration
  • Designed to increase horsepower and acceleration
  • Washable and reusable - lasts up to 50,000 miles before cleaning is required
  • Emissions legal in all 50 US States
Back To Top
Height:1.188 in
Material:Cotton Gauze
Outside Length:12.438 in
Outside Width:9.813 in
Shape:Panel

REVIEW SNAPSHOT®

by PowerReviews
K&NPanel Type Cotton Gauze Air Filter
 
4.2

(based on 19 reviews)

Ratings Distribution

  • 5 Stars

     

    (13)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (2)

79%

of respondents would recommend this to a friend.

Pros

  • Easy to use (16)
  • High-performance (14)
  • Durable (13)
  • Lightweight (9)
  • Versatile (7)

Cons

    Best Uses

    • Trucks (15)
    • Large cars (8)
    • Small cars (8)
      • Car & Truck:
      • Truck enthusiast (6)
      • Reviewer Profile:
      • Auto enthusiast (8), Truck enthusiast (4), Casual driver (3)
      • Was this a gift?:
      • No (12)

    Most Liked Positive Review

     

    Stay green & save a tree.

    It beats buying paper filters. Yes, it requires cleaning & retreatment with oil to trap dirt. You do need to wait until it dries before reappling the oil.

    It beats buying paper filters. Yes, it requires cleaning & retreatment with oil to trap dirt. You do need to wait until it dries before reappling the oil.

    VS

    Most Liked Negative Review

     

    Way too much oil from factory

    I have used these before and all seemed well until cleaning and an oil recharge. You need to be ready to clean your MAF sensor especially if it is very close to the airbox. ...Read complete review

    I have used these before and all seemed well until cleaning and an oil recharge. You need to be ready to clean your MAF sensor especially if it is very close to the airbox. I somewhat agree with K&N that the oil doesn't destroy the sensors but they can get oily which will seriously impact driveability until cleaned! There is some very high temp at which the oil will simply burn once in the engine so it doesnt seem to be a long term issue except your airbox will never reach this "burn off" temp.

    Reviewed by 19 customers

    Sort by

    Displaying reviews 1-10

    Back to top

    Previous | Next »

     
    5.0

    Works fine

    By Tiger05

    from Mechanicsville, VA

    About Me Auto Enthusiast, Competitive Driver

    Ask me a question

    Verified Buyer
    Level 3

    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:

      !!

      • Was this a gift?:
      • No

      Comment on this review(earn points)

       
      5.0

      Great Product

      By Chevy Chef

      from Ohio

      About Me Casual Driver, Truck Enthusiast

      Verified Buyer
      Level 1

      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:

        I use K&N air filters in all my car's and trucks

        • Was this a gift?:
        • No

        Comment on this review(earn points)

         
        5.0

        K and N Air Filters

        By Jim

        from Sergean Bluff, IA

        About Me Auto Enthusiast

        Verified Buyer
        Level 1

        Pros

        • Durable
        • Easy To Use
        • High-Performance
        • K And N Is A Quality Prod
        • Lightweight
        • Versatile

        Cons

          Best Uses

          • Large Cars
          • Small Cars
          • Trucks

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

          K and N makes very good products. I have used on all my vehicles since 2006. I am happy with the performance and quality is get for the money. Great Value.

          • Was this a gift?:
          • No

          Comment on this review(earn points)

           
          1.0

          Way too much oil from factory

          By tbone

          from Tusc, AL

          About Me Auto Enthusiast, Mechanic, Truck Enthusiast

          Verified Buyer
          Level 1

          Pros

          • More Air At Full Throttle

          Cons

          • Engine Hesitation
          • Engine Miss
          • Oil Residue Airboxintake
          • Reduced Gas Mileage
          • Too Much Oil

          Best Uses

          • None

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

          I have used these before and all seemed well until cleaning and an oil recharge. You need to be ready to clean your MAF sensor especially if it is very close to the airbox. I somewhat agree with K&N that the oil doesn't destroy the sensors but they can get oily which will seriously impact driveability until cleaned! There is some very high temp at which the oil will simply burn once in the engine so it doesnt seem to be a long term issue except your airbox will never reach this "burn off" temp.

          • Was this a gift?:
          • No

          Comment on this review(earn points)

           
          4.0

          K&N is the best air filter.

          By Indystardawg

          from Middletown, Indiana

          About Me Auto Enthusiast, Truck Enthusiast

          Verified Buyer
          Level 1

          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:

            I am a repeat K&N user. I can see the difference in mileage on my Chevrolet Silverado already, as well as more power. The price was right and I am satisfied with my purchase.

            • Was this a gift?:
            • No

            Comment on this review(earn points)

             
            5.0

            no need to look any further

            By sylkallova

            from orlando,florida

            About Me Casual Driver

            Verified Buyer
            Level 2

            Pros

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

            Cons

              Best Uses

              • Trucks

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

              I love this filter it is reuseable so i never haft to worry about replacing my air filter again. Excellent quality and brand. I would strongly recommend this for trucks,suvs,and any other large vehicle. The cost is even reasonable and worth it. Buy this and i promise you cant go wrong. Stop fooling with those filter that only last until ur next oil this is an investment that pays for itself. Try one and you will see the difference.

              • Was this a gift?:
              • No

              Comment on this review(earn points)

               
              3.0

              Wanted more mileage

              By TOPCAT

              from Centerville Ohio

              Ask me a question

              Verified Buyer
              3 or more reviews submitted

              Pros

              • Easy To Use

              Cons

                Best Uses

                • Trucks

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

                I have a 2012 Chevy 1500 Silverado with a 4.8 v8 engine with only 700 miles on it when I bought the K&N air filter hoping to get better mileage per gallon of fuel. After 500 miles of driving with the new K&N air filter I have found that I am only seeing a little increase in my mileage of less than a half mile per gallon over the stock air filter. The K&N air filter fit in the filter compartment just like the stock air filter. I did not experience any real power change with the K&N filter over the stock filter.

                • Was this a gift?:
                • No

                Comment on this review(earn points)

                 
                5.0

                Great Product, BAD Coupon Code/Service

                By why bother

                from Cincinnati, OH

                Verified Buyer
                Level 1

                Pros

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

                Cons

                  Best Uses

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

                    K&N Brand Speaks for itself. Stock replacement filter for Tahoe that will last a lifetime.

                    • Was this a gift?:
                    • No

                    Comment on this review(earn points)

                     
                    5.0

                    Great

                    By Kevin

                    from IA

                    About Me Auto Enthusiast, Casual Driver, Mechanic, Truck Enthusiast

                    Ask me a question

                    Verified Buyer
                    3 or more reviews submitted

                    Pros

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

                    Cons

                      Best Uses

                      • Large Cars
                      • Small Cars
                      • Trucks

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

                      I have these in all my cars trucks and motorcycles. They work great.

                      • Was this a gift?:
                      • No

                      Comment on this review(earn points)

                       
                      5.0

                      K & N is great

                      Pros

                      • Durable
                      • High-Performance

                      Cons

                        Best Uses

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

                          Nice product and I gained 2 mpg on highway driving

                          • Was this a gift?:
                          • No

                          Comment on this review(earn points)

                          Displaying reviews 1-10

                          Back to top

                          Previous | Next »

                          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.

                          6 Questions | 9 Answers
                          Displaying questions 1-6
                          • Q:

                            Can this filter work nin an 8.1 workhorse rv?
                            Asked on 8/14/2012 by Greg from Jacksonville, Fl.

                            1 answer

                            • CUSTOMER CARE

                              A:

                              We will need more information including the year, make, model, and engine size of your application before we can make a suggestion.

                              Answered on 8/15/2012 by Aaron from AAP
                          • Q:

                            were is the filter located
                            Asked on 6/5/2011 by bud from 34604

                            1 answer

                            • CUSTOMER CARE

                              A:

                              The air filter unit is usually situated on top of the engine and it can be found slightly off centre between the front grill and the engine.

                              Answered on 6/6/2011 by Just Ask Jacob! from AAP
                          • Q:

                            Is there any truth to the accusation that this filter will cause your check engine lite to come on because of the Mass Airflow sensor detecting the oil?
                            Asked on 3/28/2011 by Mr Ed from Huntington, WV

                            1 answer

                            • A:

                              You can go on the K&N website to view the test that they have done on this matter. They also requested Failed MAFS be sent to them to determine cause of failure out of the 100's tested none were determined to be caused by the oil in the filter. They did a test in which they actually dipped a MAFS into the oil they use on the filters and the Sensor still passed. They will also fight a dealership on your behalf if the dealership tries to deny your warranty. Check it: http://www.knfilters.com/maf/massair.htm

                              Answered on 5/17/2011 by Triple D from Pittsburgh, PA
                          • Q:

                            Will this filter affect warranty
                            Asked on 1/22/2011 by Anonymous

                            2 answers

                            • CUSTOMER CARE

                              A:

                              No, it will not void the warranty.

                              Answered on 1/27/2011 by Parts Guru Geo from AAP
                            • A:

                              It is best that you contact your dealer of this situation. Cause some will say that it has to be a Motorcraft (Ford) or an AC Delco (GM). Dealerships can be very picky and use this against you.

                              Answered on 3/18/2011 by cajuncat from Springdale, Arkansas
                          • Q:

                            how do you clean this filter?
                            Asked on 5/17/2010 by Anonymous from charleston wv

                            2 answers

                            • CUSTOMER CARE

                              A:

                              You will need the recharge kit that K&N offers. This kit will have instructions on how to properly clean the filter.

                              Answered on 5/17/2010 by Mike from AAP
                            • A:

                              When you clean this filter, use ther pump spray bottle and spray it on the intake side of the air filter (side facing down into air box). Wait for 5 minutes after spraying to soak for better cleaning. Then use a small amount of water pressure from a hose and spray thru the opposite side of where you sprayed the cleaner. Make sure you spray the same path as the cleats (RIBS) for better results. Depending on the weather conditions, you can let it dry outside in the sun for about one to two hours. Or you can use a hair dryer to dry it quicker after you have shakin it to make sure all of the water is out of the cleats. After drying, spray small amount of your oil on the intake side while following the cleats. Let this dry about 30 minutes. Hold your filter up to bright light to make sure that you have an even coat of spray. If not, lightly spray that spot. If not, reinstall your filter in the breather box. On some truck models you have to reset the air fillter monitor gage.

                              Answered on 3/18/2011 by cajuncat from Springdale, Arkansas
                          • Q:

                            does this filter increase mpg
                            Asked on 12/5/2009 by Anonymous

                            2 answers

                            • CUSTOMER CARE

                              A:

                              K&N air filters have been know to improve gas mileage in some vehicles more than others.

                              Answered on 3/17/2010 by Mike from AAP
                            • A:

                              Depending on your driving conditions and what shape that your motor is in, yes, this can increase your MPG's from low as 2 to 6 or 7 at most. But , there are other things that can even help you more. Like proper maintanance, tire pressure, wheel balance and alignment and other things that are mentioned in your owners manual. You take care of your vehicle and your vehicle will take you many miles down the road.

                              Answered on 3/18/2011 by cajuncat from Springdale,Arkansas
                          Displaying questions 1-6

                          Do you have a question about this product? 

                          Create or view your online garage

                          Check out the specials in our monthly flyer

                           
                           
                          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.