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33-2181
$47.99 USD
MSRP $74.99 36.0% Off
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K&N 33-2181 Air Filter

Replacement Filters > Replacement Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   5.0 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®
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 Amount1.21 oz (36 ml)
Height1.25 in (32 mm)
Outside Length13.688 in (348 mm)
Outside Width5.188 in (132 mm)
Package Contents1 Air Filter
Package Quantity1
Product Box Height17.19 in (437 mm)
Product Box Length8.31 in (211 mm)
Product Box Width1.75 in (44 mm)
Product StylePanel Air Filter
Weight0.9 lb (0.4 kg)

K&N 33-2181 Air Filter Product Reviews

See all reviews!
Review part 33-2181
Tuesday, January 19, 2016 - Part 33-2181
I have not had not any problems with them and I have always tried to use them. I've used them in my mark Porsche and my Mercedes now, and my Volkswagen turbo diesel I had, and it was perfect. It is nice to know the product works great and that it does what it says it will do. When I put it on my Porche, it was really fun to drive.

Robert Thompson
Wichita, Kansas
Wednesday, November 04, 2015 - Part 33-2181
FILTER CAME EARLIER THAN EXPECTED. I WAS ABLE TO INSTALL THE SAME DAY. THE FIT TO THE CAR INDUCTION SYSTEM WAS PERFECT. THANKS FOR THE FAST SERVICE.

Danny
Georgia
Tuesday, November 03, 2015 - Part 33-2181
Great filter..

Lee Fitts
Memphis, Tennessee
Wednesday, October 28, 2015 - Part 33-2181
Quick and easy installation. Improved throttle response and acceleration. Highly recommend.

Randy Boatswain
Baltimore, Maryland
Monday, October 05, 2015 - Part 33-2181
My Mercedes Benz C300 is sucking air like never before. Highly recommended :)

John
Ohio
Wednesday, September 02, 2015 - Part 33-2181
Great product and a great way to buy Thanks.

Michael Parker
Cedar Park, Texas
Friday, July 31, 2015 - Part 33-2181
Fast shipping and it fits perfectly Car runs great, nice to know that I will never have to replace the air filter again

Richard
Monterey, California