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K&N 33-2431 5.0 out of 5 stars 10 Customer Reviews
Replacement Filters > Replacement Air Filter

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33-2431
 
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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 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.

[More Information on Replacement Air Filters]
  • 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®


Product Specifications 
Air Filter Shape:Panel
Filter Material:Cotton Gauze
Filter Re-Oiling Amount:1.69 oz (50 ml)
Height:1.25 in (32 mm)
Outside Length:12.25 in (311 mm)
Outside Width:9.625 in (244 mm)
Package Contents:1 Air Filter
Package Quantity:1
Part Number:33-2431
Product Box Height:1.69 in (43 mm)
Product Box Length:12.5 in (318 mm)
Product Box Width:10.38 in (264 mm)
Product Style:Panel Air Filter
Weight:1.9 lb (0.9 kg)


Product Reviews    See all reviews!  Review part 33-2431

 No problems so far!
Joseph Maletta, Denver, Colorado
 Easy install - 5 min. and done. Thanks Ford. Ran K&N on '05 F150 for 160,000 miles - all good. Expect it will aid my Mustang. Just wish you made one for my '88 Ford Ranger SC 4x4.
Mike Peacock, Richmond , Virginia
 Love the filter. It completes having a K&N filter in every vehicle I own.
Barbara Holter, Colorado
 Great product.
Dean Little, Georgia
 Simply the BEST on the market. I have used them in all of my vehicles. They are easy to install and you will immediately notice a boost in power and a small improvement in the gas mileage. Easy to clean and very durable. Spend the extra money and try one in your car or truck. You will save that money the first year in gasoline. I have them in my 2014 Mustang V6 Coupe and my 2013 Ford Explorer XLT V6.
Stuart Hill, Deming, New Mexico
 Best filter on the market. This is the 12th car with a K&N filter and I will never use anything else.
Lawrence McMurtry, King George, Virginia
 I have used K&N filters for the last 20 years. 1) 1992 318 Dodge Dakota pickup truck 2) 1999 Plymouth Prowler and the 3rd a 2014 Ford Mustang convertible. Great filter.
Ed Jacobs, Wentzville, Missouri