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K&N 33-2129 Air Filter

Replacement Filters > Replacement Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.9 out of 5 stars   95 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 Amount1.85 oz (55 ml)
Height1.188 in (30 mm)
Outside Length12.438 in (316 mm)
Outside Width9.813 in (249 mm)
Package Contents1 Air Filter
Package Quantity1
Product Box Height17.81 in (452 mm)
Product Box Length11.06 in (281 mm)
Product Box Width1.88 in (48 mm)
Product StylePanel Air Filter
Weight1.8 lb (0.8 kg)

K&N 33-2129 Air Filter Product Reviews

Thursday, April 21, 2016 - Part 33-2129
Felt the difference in acceleration right away..

Arsenio Pecora
New Jersey
Monday, April 18, 2016 - Part 33-2129
This is a second filter for the same vehicle. Since I live in the Pacific Northwest, having two filters allows me to have a clean filter ready to install and I don't have to worry about the humidity or rain (for cleaning and drying purposes). I remove one and clean it and install the dry freshly oiled one. This is also the second vehicle that I have had K&N filters in. I highly recommend these filters and systems.

Vancouver, Washington
Friday, April 15, 2016 - Part 33-2129
As always, very satisfied with K&N product. Every car/truck has one installed. It is usually first item I get, after buying a new car/truck.

Frisco, Texas
Tuesday, April 05, 2016 - Part 33-2129
Great filter, Fast delivery.

Greg Colaw
Bluegrass, Virginia
Friday, April 01, 2016 - Part 33-2129
Filter fits well. Am looking forward to it doing a good job for me like all the K&N filters I have purchased in the past have done.

David Wyum
West Fargo, North Dakota
Wednesday, January 27, 2016 - Part 33-2129
I could tell an immediate difference after replacing the stock air filter in my 2011 GMC Sierra with the K&N filter. Engine performance increased dramatically. I am very pleased.

James Davis
Clayton, North Carolina
Thursday, January 21, 2016 - Part 33-2129
Have been using K&N filters for over 25 years. Raced Dirt track for 10 years so I saw how good the K&N filters are, paper filters were junk, even the best (highest priced) would have tell-tale streaks of dust on the air cleaner plate. No dust with K&N. Engines cost too much to not properly protect and K&N did an outstanding job. Ran some engines two years without having to refresh and won a lot of races. One of the only driver/owners to actually make more money in winnings than it cost to race and I did it without ANY sponsors. I have 4 trucks, 4 motorcycles, and a lawn mower that all run K&N's. If it has an engine, it will have a K&N.

Boyd Bivens
Friendsville, Tennessee