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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   55 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®
The K&N 33-2031-2 Air Filter fits some FAW Century Star, Ford Corsair, Ford Maverick, Holden Calais, Holden Commodore, Infiniti FX35, Infiniti G20, Infiniti G35, Infiniti I30, Infiniti I35, Infiniti J30, Infiniti JX35, Infiniti M30, Infiniti Q45, Infiniti QX4, Infiniti QX60, Isuzu Gemini, Nissan 200SX, Nissan 240SX, Nissan 300ZX, Nissan 350Z, Nissan 810, Nissan Almera I, Nissan Almera II, Nissan Almera Tino, Nissan Altima, Nissan Axxess, Nissan Bluebird, Nissan Cedric, Nissan D21 Pickup, Nissan Frontier, Nissan Laurel, Nissan Maxima, Nissan Murano, Nissan Navara, Nissan NX, Nissan Pathfinder, Nissan Patrol, Nissan Pickup, Nissan Prairie, Nissan Primera, Nissan Primera I, Nissan Pulsar NX, Nissan Quest, Nissan QX, Nissan Sentra, Nissan Serena, Nissan Silvia, Nissan Skyline, Nissan Stanza, Nissan Sunny II, Nissan Sunny III, Nissan Terrano I, Nissan Terrano II, Nissan X-Trail, Nissan Xterra, Opel Astra F, Opel Corsa A, Opel Kadett E, Opel Vectra A, Reliant SS1, Toyota Lexcen, Vauxhall Astra Mk2, Vauxhall Astra Mk3, and Vauxhall Nova models. See vehicle applications link for details.
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

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
Thursday, December 8, 2016 - Part 33-2031-2
Best filter money can buy.

Nicholas Els
Nashville, Tennessee