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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   39 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, August 8, 2016 - Part 33-2031-2
Good product .

Donovan March
Queens Village, New York
Thursday, July 21, 2016 - Part 33-2031-2
I have this filter for my Nissan Altima 3.5 V6. I have seen that my gas mileage went up from 23city up to 26.2 in the city, well worth the money. I also get better power from car with K&N air filter.

Naperville, Illinois
Tuesday, July 19, 2016 - Part 33-2031-2
Obviously better quality than factory issued. I have paid for numerous filters in my time and this will stop that problem, not to mention the quality is great.

Steven Raymond
Rowlett, Texas
Friday, July 8, 2016 - Part 33-2031-2
Wow, I really noticed an increase in power and gas mileage. I was getting about 17mpg but now I am up to 19.5 mpg. Nice!

Clay Richardson
Universal City, California
Wednesday, June 29, 2016 - Part 33-2031-2
I began using K&N air filters in my 1988 Mustang when it was new, and have used K&N air filters in every car and motorcycle I've owned since then. I will never use any other brand. K&N provides a superior product and customer service. Please keep up the outstanding efforts.

Kyle Myers
Miamisburg, Ohio
Monday, June 27, 2016 - Part 33-2031-2
I love this product and has been the 2nd time I've used it. I have boosted my mileage by 30 miles and the pick up response is instantaneous. I can't imagine any car I drive without me changing to this product. When I changed out the factory filter it was literally paper. Awesome product.

Marvin Ledgister
Miramar, Florida
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