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K&N 33-2031-2 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   33 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 Amount1.06 oz (31 ml)
Height1.125 in (29 mm)
Outside Length11 in (279 mm)
Outside Width6.563 in (167 mm)
Package Contents1 Air Filter
Package Quantity1
Product Box Height13.56 in (345 mm)
Product Box Length7.72 in (196 mm)
Product Box Width1.75 in (44 mm)
Product StylePanel Air Filter
Weight1.1 lb (0.5 kg)

K&N 33-2031-2 Air Filter Product Reviews

Tuesday, May 10, 2016 - Part 33-2031-2
I purchased this air filter based on potential horsepower increase plus better air filtration. I was skeptical at first but after the easy installation on my 350Z, I did notice an increase in performance at full throttle plus a new more aggressive sound. This product appears well made and I look forward to many years of service. And by the way, the filter arrived sooner than promised.

Louisville, Kentucky
Thursday, April 7, 2016 - Part 33-2031-2
K&N is the best filter their is. I always buy one for my new cars. Never have to worry about people asking you if you need a new air filter when having the oil changed.

Vernon Hodgson
Tuesday, March 8, 2016 - Part 33-2031-2
Good as expected!

Antonio Lieras
Bonita, California
Tuesday, February 9, 2016 - Part 33-2031-2
Wonderful product. Did get a little more sound out of the air box but nothing too loud. I believe I am getting more power with no sacrifice in mpg.

Stephen Reus
White Plains, New York
Saturday, December 26, 2015 - Part 33-2031-2
This is a great product, I use K&N product before and won't be my last.

Fort Lauderdale, Florida
Friday, December 25, 2015 - Part 33-2031-2
Loved the holiday discount and free promo hat. Perfect gift idea for the season

Linda Kahn
San Jose, California
Thursday, December 3, 2015 - Part 33-2031-2
This is for my 2014 Murano, it's my 3d K&N filter panel. As in the other 2 vehicles(a 240SX and a Scion tC), it softened up the low end a bit and perked up the mid to high, and it looks like I'll be getting about 1-2 mpg more. In time, it adds up. Fast shipping, fair price, very satisfied. I must be, I came back for a third one Thanks for a great product

Terry onley
Valley Center, Calfironia