K&N AC-4004 Air Filter

Replacement Filters / Replacement Air Filter
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$65.99 USD
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Product Overview

  • 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 AC-4004 Air Filter fits some Arctic Cat 400 4x4, Arctic Cat 400 4x4 Auto, Arctic Cat 400 4x4 Auto LE, Arctic Cat 400 4x4 Auto TBX, Arctic Cat 400 4x4 Auto TRV, Arctic Cat 400 4x4 Auto TRV Plus, Arctic Cat 500 4x4, Arctic Cat 500 4x4 Auto, Arctic Cat 500 4x4 Auto LE, Arctic Cat 500 4x4 Auto M4, Arctic Cat 500 4x4 Auto TBX, Arctic Cat 500 4x4 Auto TRV, Arctic Cat 650 H1 4x4 Auto, Arctic Cat 650 H1 4x4 Auto LE, Arctic Cat 650 H1 4x4 Auto TBX, Arctic Cat 650 H1 4x4 Auto TRV Plus, Arctic Cat 650 H1 4x4 TRV Plus LE, Arctic Cat Prowler 650 H1, and Arctic Cat Prowler XT 650 H1 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]
Air Filter ShapePanel
Height0.875 in (22 mm)
Package Contents1 Air Filter, 1 K&N 1oz Sealing Grease
Package Quantity1
Product StyleUnique Air Filters
Filter MaterialCotton Gauze
Outside Length12.813 in (325 mm)
Outside Width7.5 in (191 mm)
Weight1.5 lb (0.7 kg)
Filter Re-Oiling Amount0.76 oz (22 ml)
Product Box Height1.75 in (44 mm)
Product Box Length13.56 in (345 mm)
Product Box Width7.72 in (196 mm)
WARNING: Cancer and reproductive

K&N AC-4004 Air Filter Product Reviews

Monday, December 10, 2018 - Part AC-4004
Easy ordering and a great filter. Much better than the OEM for my atv. I have bought other ones before for my cars.

Christopher Strysick
Cedar Grove, Wisconsin
Tuesday, January 13, 2015 - Part AC-4004
I have K&N on all my stuff. Your secret is out. Received this order really fast.

Andrew Ambos