Replacement Air Filter
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Replacement Air Filter Replacement Air Filter
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K&N Replacement Air Filter

Part No. E-2427 Warranty Details  
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 the majority of vehicles 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.

Product Features:
  • This is the last air filter your vehicle will ever need!
  • 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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Flange Inside Diameter:3.375 in
Flange Length:4.188 in
Flange Type:Angled
Height:7.875 in
Material:Cotton Gauze
Outside Diameter Top:4.5 in
Shape:Round Straight
Top Type:Metal


by PowerReviews
K&NReplacement Air Filter

(based on 1 review)

Ratings Distribution

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  • 1 Stars



Reviewed by 1 customer

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(1 of 2 customers found this review helpful)


Poor product for this application


from Webster, NY

See all my reviews

Verified Buyer
Helpful Reviewer


  • No positives


  • Difficult To Use
  • Filter does not fit
  • Incompatible
  • Not close to original
  • Very expensive

Best Uses

  • Acura Integra
  • Small Cars

Comments about K&N Replacement Air Filter:

This filter is not close to being a performance replacement air filter. The part does not fit correctly in the air box. There is a large opening on the engine side of the filter box with this product. Compare original with this air filter and there is an obvious difference.

  • Car & Truck:
  • Auto Enthusiast, Wrencher

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