Replacement Filters / Replacement Air Filter

K&N 33-2135 Air Filter

Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5     48 Customer Reviews
$62.99 USD
MSRP $96.79 34.9% Off
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Product Overview

  • 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]
Air Filter ShapePanel
Filter MaterialCotton Gauze
Height1.625 in (41 mm)
Outside Length12.5 in (318 mm)
Outside Width9.875 in (251 mm)
Package Contents1 Air Filter
Package Quantity1
Warranty1,000,000 Miles/10 Year
Product StylePanel Air Filter
Weight2.2 lb (1 kg)
Filter Re-Oiling Amount3.28 oz (97 ml)
Product Box Height2.34 in (60 mm)
Product Box Length15.06 in (383 mm)
Product Box Width11.06 in (281 mm)
WARNING: Cancer and reproductive

K&N 33-2135 Air Filter Product Reviews

Monday, October 15, 2018 - Part 33-2135
The filter was very easy to install and ready to run.  The vehicle sounds different, and seems to have more power. Thank you, Steve P.

Steven Palmquist
Lindsborg, Kansas
Monday, September 10, 2018 - Part 33-2135
This is my 4th Duramax. I've been driving them since 2001, logging nearly a million miles. When I sold my '05 which had 302,000 miles , I pulled my K&N air filter and put it in my 08 and drove another 447,000 miles on the same K&N, which I cleaned and re-oiled regularly. K&N filters make great economic sense for us high mileage drivers. Thanks. Tony Lepore

Anthony Lepore
Auburn, Maine
Tuesday, June 12, 2018 - Part 33-2135
The air filter is perfect. Gas mileage and horsepower have both gone up. Will definitely buy K&N products again.

Chris Neith
Cedar Falls, Iowa