Replacement Air Filter
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K&N Replacement Air Filter

Part No. HA-1801 Warranty Details  

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K&N's high-flow air filters are available as a replacement for your stock motorcycle air filter element. They are custom engineered to fit your specific application and are designed to provide low restriction and increased performance, while providing excellent engine protection for your motorcycle.

Product Features:
  • Designed to provide increased horsepower and torque
  • Pleated media provides a large filtration area offering long service intervals
  • Multiple layers of woven cotton gauze media offers excellent filtration
  • Application specific base seal and sealing bead
  • Made in the USA for over 40 years
  • Washable & reusable, pre-oiled and ready to ride!
  • Includes a 10-Year/Million-Mile Limited Warranty
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Height:0.75 in
Material:Cotton Gauze
Outside Length:9.375 in
Outside Width:9.063 in


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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K&N filter is the best for any car/cycle


from Three Rivers, Mich

Verified Buyer


  • Check every six months


    Best Uses

      Comments about K&N Replacement Air Filter:

      I have this procduct in all my cars,

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