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MSRP $72.32 35.0% Off
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K&N 33-2609 Air Filter

Replacement Filters > Replacement Air Filter
  • 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 Amount0.76 oz (23 ml)
Height1.188 in (30 mm)
Outside Length9.875 in (251 mm)
Outside Width7.281 in (185 mm)
Package Contents1 Air Filter
Package Quantity1
Product Box Height1.75 in (44 mm)
Product Box Length13.5 in (343 mm)
Product Box Width7.75 in (197 mm)
Product StylePanel Air Filter
Weight0.2 lb (0.1 kg)

Customer Feedback

I just bought a lightly used 2005 Acura MDX and one of the first things I did within my first week of ownership was put the stock replacement K&N air filter in the air box.  I had one in my previous car a 98 VW GTI VR6.  The K&N air filter is an absolute no brainer.  Do not wait any longer this is a decision that will turn out to be one of the best decisions you have ever made, and it's so simple and affordable.  

If you know your car... You can hear her finally breathing freely like she has always dreamed of.

...and yes it's true.  All of your stats will improve instantly, better gas mileage, and more horsepower.

I am a dedicated K&N owner for life (I'm only 30), and I do almost nothing else to my own cars, they go to the dealer or a certified shop for everything else, but this is so simple you would have to be foolish not to try on your own.  

Remember to google yourself some pointers on opening your factory air box properly if you need to.

The whole process took me about 15 minutes.

The best $40-$60 you will ever spend.

Portland, Oregon
I installed the system on my Opel Omega B and I was quite impressed from the intake. The power has had a tangible increase. I recommend this intake system to all who are hesitating!!!

Alexander Dimitrov
Gabrovo, Bulgaria
I put the 57i kit onto my Vauxhall Corsa 1.8 SRI 2004. It sounds great.

Scott Carter
Devon, England/United Kingdom