AC-4004 Image

Replacement Filters > Replacement Air Filter

 List Price: $80.51
Your Price: $62.99

You Save 21.8%

Find a Local K&N Dealer


       

AC-4004
 
In Stock & Ready to Ship!
 Free Ground Shipping!


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.
  • Designed to increase horsepower and acceleration
  • Designed for extended use in dusty conditions
  • Can be cleaned and used again
  • Cleanable with K&N Filter Cleaner
  • One year limited warranty
Available Information
AC-4004 Cross Reference
Installation Instruction Sheet
AC-4004 Vehicle Applications
Air Filter Test Data
News Story - 2006, 2007 & 2008 Arctic Cat 400, 500 and 650 ATV's Gain Performance with New K&N Air Filter


Part AC-4004 Product Specifications
Product Style: Unique Air Filters
Air Filter Shape: Panel
Filter Material: Cotton Gauze
Flanges: None
Height: 0.875 in (22 mm)
Package Contents: 1 Air Filter, 1 K&N 1oz Sealing Grease
Package Quantity: 1
Filter Re-Oiling Amount: 0.76 oz (22 ml)
Outside Length: 12.813 in (325 mm)
Outside Width: 7.5 in (191 mm)
Weight: 1.5 lb (0.7 kg)
Product Box Length: 7.72 in (196 mm)
Product Box Width: 1.75 in (44 mm)
Product Box Height: 13.56 in (345 mm)



Customer Feedback      Be the first to review part AC-4004

I highly recommend this item to help keep the off-road riding micro particals from possibly entering the engine. Installed on an arctic cat 400 4x4, it also helps extend cleaning periods to the filter!
Joe, Lacombe, Louisiana
Installing this filter dramatically improved the throttle response over the factory air filter. Installed on a 2006 arctic cat 400 4x4. I also purchased the dry filter cover to help keep out the small micro stuff for off-road use, which was highly recommended by a friend that is a atv mechanic!
Joe, Lacombe, Louisiana
Installed the K&N Cone filter on my Arctic Cat Prowler UTV. I used this as a pre-filter. The factory filter is an oil treated foam filter inside an air box. After one day of riding dirt trails, the factory filter needed to be cleaned. Using the K&N filter as a pre-filter has resulted in not cleaning the factory filter after every ride, but rather cleaning about once every 10-15 rides. I just blow out the K&N filter, and reinstall. I leave the filter dry. The filter does an excellent job! I've used other K&N filters in the past, and have always has great results! Thanks for a great product!
Richard Davidson, Reed City Michigan