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33-2398
$63.99 USD
MSRP $99.79 35.9% Off
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K&N 33-2398 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   2 Customer Reviews
  • 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®
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.

[More Information on K&N Replacement Air Filters]

Product Specifications

Air Filter ShapePanel
Filter MaterialCotton Gauze
Filter Re-Oiling Amount1.1 oz (32 ml)
Height1 in (25 mm)
Outside Length9.25 in (235 mm)
Outside Width8.875 in (225 mm)
Package Contents1 Air Filter
Package Quantity1
Product Box Height10.31 in (262 mm)
Product Box Length10.19 in (259 mm)
Product Box Width3.94 in (100 mm)
Product StylePanel Air Filter
Weight1.4 lb (0.6 kg)

K&N 33-2398 Air Filter Product Reviews

Monday, May 16, 2016 - Part 33-2398
Quick and efficient buying experience....very professional. Received the product as promised in just a few days. Installation instructions were clear and it was quickly installed in my M45X Infinity. There was a sticker that warned not to replace the filter and that was a nice touch to insure that some service technician doesn't dump the permanent filter. I believe that there was a noticeable increase in power after installation. Excellent product at a good price.

R.L. Hagengruber
Albuquerque, New Mexico
Friday, October 24, 2014 - Part 33-2398
The K&N air filters are as good as advertised.  I installed one in my 2007 Nissan Armada and the other in my 2008 M-45X.  I automatically noticed an increase in vehicle power which as you probably already know they both sport a V-8 power plant.  I am definitely going to purchase another for my wife's 2008 G-35X within the coming weeks.

John Miller
Waldorf, Maryland