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K&N HA-4207 Air Filter

Replacement Filters > Replacement Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   5.0 out of 5 stars   5 Customer Reviews
  • Designed to provide increased horsepower and acceleration
  • Specifically developed for Off-Road, Motocross, ATVs, UTVs and Side by Sides
  • Pleated cotton media provides a large filtration area offering low restriction, high-capacity and long service intervals
  • Multiple layers of woven cotton gauze media offers excellent filtration
  • Fits directly into OEM air box with application specific sealing bead ensuring a precise fit
  • No fuel management modifications are required to obtain increased performance
  • Washable & reusable, most are pre-oiled and ready to ride!
  • One Year Limited Warranty
The K&N HA-4207 Air Filter fits some Honda TRX420FA Rancher AT, Honda TRX420FE FourTrax Rancher 4X4 ES, Honda TRX420FM FourTrax Rancher 4X4, Honda TRX420FPA Rancher AT 4x4 w/PS, Honda TRX420FPE Rancher ES 4x4 w/PS, Honda TRX420FPM Rancher 4x4 w/PS, Honda TRX420TE FourTrax Rancher ES, and Honda TRX420TM FourTrax Rancher models. See vehicle applications link for details.
K&N off-road replacement air filters are ideal for extended use in dirty and dusty off-road riding and provide clean carburetion even at high altitude. Generally, no jet changes are required with just a K&N filter element. K&N replacement air filters are washable and reusable and provide high air-flow with excellent filtration.

[More Information on Off-Road Motorcycle and ATV Air Filters]

Product Specifications

Air Filter ShapeRound Tapered
Filter MaterialCotton Gauze
Height5.25 in (133 mm)
Package Contents1 Air Filter
Package Quantity1
Product StyleUnique Air Filters
Flange Inside Diameter2.5 in (64 mm)
Base Outside Diameter4.063 in (103 mm)
Top Outside Diameter4.5 in (114 mm)
Weight1 lb (0.4 kg)
Filter Re-Oiling Amount1.34 oz (40 ml)
Product Box Height7.13 in (181 mm)
Product Box Length4.56 in (116 mm)
Product Box Width4.56 in (116 mm)

K&N HA-4207 Air Filter Product Reviews

Thursday, March 2, 2017 - Part HA-4207
Big difference! Now it pops wheelies like nothing and peels out anywhere in 3rd gear.

Thursday, November 3, 2016 - Part HA-4207
Tight fit but, much better than the OEM.

William Throne
Oro Valley, Arizona
Tuesday, July 15, 2014 - Part HA-4207
As always, K&N filters are awesome!! This filter was purchased for my new 2013 Honda Rancher - more power, easy clean up, & easy install. I run K&N filters on ALL of my vehicles: 04 Silverado 2500HD, 2003 S-10 ZR5, 1994 Jeep Wrangler YJ & now the Honda. Thank you K&N for a great product! The shipping was fast & free.

Scott Spencer
Saginaw, Michigan
Saturday, November 16, 2013 - Part HA-4207
I have been riding dirt bikes and off road equipment since the early 70's, I never went riding until I did an exchange for K&N Filters. They are one of a kind, and they work. In later years I ran a motorhome company in Ontario CA, in 86-87 I met the owners of K&N, we were building units for several off racing teams, and we installed K&N filters in their rigs. As stated above, I believe in them, I use them in all of my car's and have for ever

Don D Kelley Sr
Desert Hot Springs, California
Monday, November 11, 2013 - Part HA-4207
I have a 2009 Honda Rancher 420 FA. Simply upgrading the filter alone has made an incredible difference in performance with my quad. I don't have actual numbers, but I can tell you it's a hell of a lot peppier now than it was. I love it. The best part I can simply wash it and re-oil it and it's like new again. I buy K&N every chance I get. I highly recommend K&N where it makes sense. Thanks!

Chris Suman
Bellefontaine, Ohio