K&N 33-2399

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   15 Customer Reviews
List Price: $87.88
Your Price: USD $59.99

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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 virtually every vehicle 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]
  • 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®

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)

Product Reviews

See all reviews!
Review part 33-2399
Tuesday, September 29, 2015 - Part 33-2399
Great product, well packed. Love the stickers. Made a real difference over the Stock 370z Filters. One of the best purchases I have made for the car - others have followed. Worth every penny.

Les Black
Cambridge, UK
Saturday, August 08, 2015 - Part 33-2399
Great product. Can't go wrong with a K & N Filter.

Patrick Adams
Satsuma, Alabama
Monday, July 27, 2015 - Part 33-2399
I bought these for my 2015 Nissan 370Z Sport Model. Installed them last month and have been really pleased with their performance. Throttle response has been much better, smoother and more predictable. Engine doesn't seem to be straining and I even saw an increase in gas mileage. Not much, maybe 3 mpg's, but it's better than what it was. Thanks K&N, I'll be back for more of your great products.

John G
Los Angeles, California
Thursday, May 21, 2015 - Part 33-2399
Easy installation. Immediate increase in economy and performance

Costa Mesa, California
Wednesday, May 06, 2015 - Part 33-2399
I have used K&N air filters for years and have been satisfied each time I have bought one.

Mark Schneider
Largo, Florida
Wednesday, March 25, 2015 - Part 33-2399
This is my second purchase from K&N, the first being two years ago. Though the first product didn't work well in my vehicle at the time, I was very impressed with the customer service I received, and the attention of your staff.

Calvin Brewer
Escondido, California
Wednesday, December 10, 2014 - Part 33-2399
I have had these filters in my Nissan 370Z for 3 years and I notice the little extra performance and nicer engine sound (even though it's only slight, I know my car and it's definitely an improvement). Never had any trouble with filtration quality. I can't speak highly enough of the customer service I've received using this website either.

Queensland, Australia