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33-2178
$52.99 USD
MSRP $82.99 36.1% Off
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K&N 33-2178 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 Amount1.1 oz (32 ml)
Height0.938 in (24 mm)
Outside Length12.688 in (322 mm)
Outside Width6.125 in (156 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 lb (0.5 kg)

Customer Feedback

We started using your products perhaps 10+ years ago when a pro-stock drag bike racer who is also my best friend recommended your oil filters to me. Since then, I did an exhaust system on a 2008 Lexus GS 350, and engine air filters on every car I have acquired since. For myself and my wife who really doesn't notice such changes, we have really benefited form your products. We both drive Acura MD X's now so the oil filter product is the same. We thank you for making your products available to the daily consumer.

Steve Allen
California
K&N air filters are well worth the cost. Had to order mine (2015 Acura MDX) since no local auto parts places carried it but again, it is well worth it. Just make sure you affix the decal on the air filter housing to make sure someone does not replace it if you get it serviced other than yourself.

Randy
Orlando, Florida
Great QUALITY product that adds the necessary horsepower, as well as that nice deep aggressive tone to my 2009 Acura TL. You can tell from the website along with the product itself that K&N is a TOP-NOTCH quality company. Highly recommend this product.

Haris Mrkulic
Flushing, New York