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33-2399
$56.99 USD
MSRP $87.88 35.2% Off
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K&N 33-2399 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   26 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 33-2399 Air Filter fits some Fiat Sedici, Infiniti EX35, Infiniti EX37, Infiniti G25, Infiniti G35, Infiniti G37, Infiniti Q60, Infiniti QX50, Nissan 350Z, Nissan 370Z, and Suzuki SX4 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 Amount0.61 oz (18 ml)
Height1 in (25 mm)
Outside Length7.125 in (181 mm)
Outside Width6.625 in (168 mm)
Package Contents1 Air Filter
Package Quantity1
Product Box Height9.69 in (246 mm)
Product Box Length7.72 in (196 mm)
Product Box Width1.75 in (44 mm)
Product StylePanel Air Filter
Weight0.9 lb (0.4 kg)

K&N 33-2399 Air Filter Product Reviews

Thursday, September 8, 2016 - Part 33-2399
Ordered and received as requested. Thank you.

Scott L Laboda
New Hope, Iowa
Sunday, August 21, 2016 - Part 33-2399
Fast shipping and the lowest price. Very satisfied with the filters. Perfect fit and gives my G37 a little more power and improved mpg.

Dino Rizzi
Terrebonne, Canada
Wednesday, August 10, 2016 - Part 33-2399
Awsome fit and fast shipping.

Ismail Awan
Thornhill, Canada
Saturday, July 23, 2016 - Part 33-2399
I've used K&N filters for over 10 years and I've always been impressed by the performance gain when switching from a paper filter to the K&N filter. Not only is there a power gain, but the fuel mileage has increase by 10 in both my old G35 and my new G37. The filters have been durable and easy to clean. This is a great product and I highly recommend it.

G Bowers
Simi Valley, California
Friday, June 17, 2016 - Part 33-2399
I was happy with the product. Good accurate service,

Robert W. Barker
Bellevue, Washington
Monday, May 9, 2016 - Part 33-2399
Got a great deal for two air filters on my 2013 370Z Nismo.

John Wilson
San Diego, California
Monday, April 11, 2016 - Part 33-2399
Delivered quickly. Usual K&N quality.

Stan Symons
Buffalo, New York