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K&N 33-2129 High Performance Replacement Air Filter

4.7 out of 5 stars 339 customer reviews
| 22 answered questions

Price: $48.69 & FREE Shipping on orders over $49. Details
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Sold by rHea AuTos and Fulfilled by Amazon. Gift-wrap available.
Replacement Air Filter
    This fits your .
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  • 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
101 new from $43.41 5 used from $41.39
$48.69 & FREE Shipping on orders over $49. Details In Stock. Sold by rHea AuTos and Fulfilled by Amazon. Gift-wrap available.

Frequently Bought Together

  • K&N 33-2129 High Performance Replacement Air Filter
  • +
  • K&N 99-5000 Aerosol Recharger Filter Care Service Kit
  • +
  • K&N 99-6000 Cabin Filter Refresher Kit
Total price: $74.15
Buy the selected items together

Product Information

Style:Replacement Air Filter

Technical Details

Brand K&N
Item Weight 1.8 pounds
Product Dimensions 12.1 x 18.2 x 1.8 inches
Item model number 33-2129
Manufacturer Part Number 33-2129
OEM Part Number 33-2129
Folding No

Additional Information

ASIN B0000UUX34
Customer Reviews
4.7 out of 5 stars 339 customer reviews

4.7 out of 5 stars
Best Sellers Rank #3,378 in Automotive (See top 100)
#68 in Automotive > Replacement Parts > Filters > Air Filters & Accessories > Air Filters
Shipping Weight 2 pounds (View shipping rates and policies)
Domestic Shipping Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
International Shipping This item is not eligible for international shipping. Learn More
Date First Available October 2, 2000

Warranty & Support

Warranty, Parts:PartsWarranty, Labor:The manufacturer may be liable if the product suffers technical failure, but not if the purchaser damages the product through his own actions.
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Product Description

Style: Replacement Air Filter

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 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.

From the Manufacturer

Also available: K&N Cabin Air Filters

The K&N Washable Cabin Air Filter is the first of its kind designed to replace your vehicle's stock cabin air filter with a washable and reusable version that cleans and freshens incoming air. K&N Cabin Air Filters are designed to be cleaned and reused over and over again. Using a combination of an advanced synthetic filter media and K&N Refresher spray, the K&N Washable Cabin Air Filter grabs and holds dust particles.

Cabin Air Filters

Oil Filters

Intake Systems

Recharger Kits


Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Style Name: Replacement Air Filter
I am professional mechanic with over 40 years experience and I can not tell you how many times I have seen excessive dirt in engine intakes only to find a K&N installed instead of a real filter. Sure they flow slightly better but how do you think they do that? Hold one up to a bright light sometime and see how much light comes through those big holes.

At a Bosch service school onetime the discussion went to mass air flow failures and K&N filters were mentioned. The instructor said that the K and N stand for "kill it now"
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Style Name: Replacement Air Filter
I purchased this item for around $20 on a special and glad I did. I'm not out changing air filters all the time and this one seems to have given me about 1/2 mpg better efficiency in my civic. I can't comment on HP because I don't really feel an increase.
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Style Name: Replacement Air Filter Verified Purchase
The first step in the instructions should be on the outside of the box and should say, "Open the package and remove the air filter. See? It's the correct size!"

If you're like me, you'll remove the old filter and realize there's no way the box dimensions are the same as the OEM filter. I almost returned it, but the K&N website said it fit, so I opened it up and tried again. Thanks to the packaging, the actual filter is about half the size of the box.

Anyway, this fits my 2007 Tahoe and 2009 Silverado. Somewhat tight squeeze to get the box cover back on, but otherwise great product, and long lasting.
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Style Name: Replacement Air Filter Verified Purchase
Paper filter once a year or a K&N that lasts the life of th truck. Regaurdless of increased fuel mileage if you notice it, it pays for itself.
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Style Name: Replacement Air Filter Verified Purchase
I purchased this to hopefully increase the MPG in my 2008 Chevrolet Silverado 5.3 Flex. I have had the filter in for almost 4 full tanks of gas with 0 increase in MPG. I am disappointed in that however, I do like the fact that I will never have to buy another filter again as long as I clean this one regularly. I do feel that it allowed the motor to open up a bit, it does have slightly better throttle response.
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By N. Shone on December 28, 2007
Style Name: Replacement Air Filter
Excellent product, fast shipping. I swear by these filters for both added power and increased fuel efficiency. I purchased this one for my '03 Suburban, and have used others in an '07 Altima, a '99 BMW 540i and a supercharged '91 Maxima. All performed flawlessly.
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Style Name: Replacement Air Filter Verified Purchase
Recieved in good order and promptly. I am still trying to determine the exact mileage improvement, about +1 mpg. Noticed the improved acceleration immediatly. My factory filter was definitly restricting air flow.
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Style Name: Replacement Air Filter Verified Purchase
There's not much anyone can say about a 1 million mile warranty washable air filter. Yes you pay high up front, but do your math on the disposable models then compare how many you buy and throw away. This filter will pay for itself within 3 to 4 years max. Fit perfect in our 2007 Chevy Suburban. Cheat the system a little more and ditch the K&N filter cleaner and oils (warranty void): just like a computer printer - cheap to buy, but the money is made off the ink cartridges. I use Purple Power to clean, flush with lots of water, then let totally dry. I then use Maxima Fab 1 spray oil to re-oil the filter. The important aspect of a washable filter: is complete inspection after cleaning. No holes or damage, then you're good to go again!
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