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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   56 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

Monday, April 17, 2017 - Part 33-2031-2
K&N quality is evident, and this is my seventh vehicle I have installed a K&N filter in. Fit was perfect and can feel better acceleration.

Gary Christman
Punta Gorda, Florida
Wednesday, March 22, 2017 - Part 33-2031-2
I've put K&N in all of my vehicles over the years.

William Polk
York, Nebraska
Wednesday, March 8, 2017 - Part 33-2031-2
The air filter was a gift for my husband. He loved it! Thank you for making the ordering process so easy. K&N is the :)

Joyce Kelley
Inglewood, California
Wednesday, March 1, 2017 - Part 33-2031-2
It's very fast shipping. Received next day after I ordered. Seems warehouse site at Canada.

Dugjai Lee
Edmonton, Canada
Saturday, February 25, 2017 - Part 33-2031-2
Love it. I could tell a difference right away.

Mike Burkett
Parma, Ohio
Monday, January 30, 2017 - Part 33-2031-2
All went well, as always.

Matthew McKenzie
Pflugerville, Texas
Sunday, January 29, 2017 - Part 33-2031-2
I fitted a K&N filter to my 2005 2.2 diesel X-Trail. It arrived very quickly and was simple to fit. The first thing I noticed was that the idling was much smoother than it had been. Secondly, the revs pick up much quicker than before - sometimes when pulling away quickly I would have to use the clutch a bit as it was reluctant and felt like it would stall. It doesn't do that any more - it's much more responsive. Under hard acceleration you can hear the engine breath. I haven't taken note of pre/post fuel economy but doesn't seem much different. I'm looking forward to seeing what difference the K&N filter makes when towing my caravan later in the year.

Hampshire, United Kingdom