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K&N 33-2399 4.9 out of 5 stars 9 Customer Reviews
Replacement Filters > Replacement Air Filter

 List Price: $87.88
Your Price: $59.99

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33-2399
 
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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 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 Shape:Panel
Filter Material:Cotton Gauze
Filter Re-Oiling Amount:0.61 oz (18 ml)
Height:1 in (25 mm)
Outside Length:7.125 in (181 mm)
Outside Width:6.625 in (168 mm)
Package Contents:1 Air Filter
Package Quantity:1
Part Number:33-2399
Product Box Height:9.69 in (246 mm)
Product Box Length:7.72 in (196 mm)
Product Box Width:1.75 in (44 mm)
Product Style:Panel Air Filter
Weight:0.85 lb (0.39 kg)


Product Reviews    See all reviews!  Review 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.
Michelle, Queensland, Australia
 The K&N filters for my '08 Nissan 350z are great. Pricey but worth it. You feel it faster and louder! It's worth the 8hp :)
George , Los Angeles, California
 Fast shipping, great filters and everything fit as ordered. Excellent price. Will do business again.
Ron White, Newfoundland, Canada
 K&N good stuff...using your filters since 1985. Definitely makes a difference. P.S. The K&N hat is really cool.....very good quality.
Gene, Amityville, New York
 Order, shipment and install were perfect.
Douglas Schramk, Baldwinsville, New York
 
Waybourn Anderson, Houston, Texas
 I've used K&N's before. Saves a lot of money on buying new filters, especially if you plan on keeping your car for a long time. I bought these for my 2014 Nismo 370Z. Honestly, I wasn't expecting anything from their entry level filters other than saving money in the long run. Also, I wasn't expecting to add any serious horsepower - that's what the other models they have are for. But I did immediately notice about 1-1.5 miles more per gallon on my car. I had been keeping track of my gas consumption before I bought these filters to see if they made a difference. Turns out they did! Although it doesn't sound like much, it still comes out to potentially 20 more miles per tank (depending on how I drive). Savings are savings, so I'm pretty happy. Plus, since you only have to use the recharge kits to clean the filters, you absolutely save on money in the long run. I continue to be a believer in K&N. I plan to upgrade to one of their better filters eventually once I start modifying my car a bit.
Del C., California