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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   90 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.

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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

See all reviews!
Review part 33-2129
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
Thursday, January 07, 2016 - Part 33-2129
love your products, use filters in all my cars, trucks and motorcycles

James Faile
Monday, January 04, 2016 - Part 33-2129
Perfect fit. Have used K&N Filters on most of my cars and motorcycles for years.

Edward Oswalt
Naples, Florida
Monday, January 04, 2016 - Part 33-2129
New truck, New filter. This is my 4th. Always quality products and service

Donald Brown
Leicester, Massachusetts
Friday, December 25, 2015 - Part 33-2129
Fast delivery, quality product. Have used K&N before. Fit right in, will use again in the future.

Stephen Evans
Paramus, New Jersey
Friday, December 25, 2015 - Part 33-2129
My new K&N Air Filter was easy to install and added power and intake sound on hard acceleration. Gas mileage on long trips has shown improvement as well.

Wimberley, Texas