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K&N 33-2489 Air Filter

Replacement Filters > Replacement Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.7 out of 5 stars   18 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®
The K&N 33-2489 Air Filter fits some Acura RDX models. See vehicle applications link for details.
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
Height1.313 in (33 mm)
Outside Length12 in (305 mm)
Outside Width7.875 in (200 mm)
Package Contents1 Air Filter
Package Quantity1
Product StylePanel Air Filter
Weight1.7 lb (0.8 kg)
Filter Re-Oiling Amount1.62 oz (48 ml)
Product Box Height17.19 in (437 mm)
Product Box Length8.31 in (211 mm)
Product Box Width1.75 in (44 mm)

K&N 33-2489 Air Filter Product Reviews

Monday, November 20, 2017 - Part 33-2489
Great air filter, I had one on my truck & wanted to replace the stock air filter on my wife’s car. I wish I knew that the “STOP” sticker was included with the filter. I wouldn’t have ordered the sticker separately.

Chazz Ragragola
Mililani, Hawaii
Monday, November 20, 2017 - Part 33-2489
Exact fit for my 2016 RDX. Works as advertised.

Carl Boloyan
Newton, Massachusetts
Wednesday, August 9, 2017 - Part 33-2489
For years, for every vehicle I've acquired, autos and motorcycles, I've installed a K&N OEM replacement air filter. They breathe better, more efficiently, and they are life time filters. Economically, and performance-wise, makes perfect sense.

Don Anderson
Palestine, Texas
Tuesday, May 2, 2017 - Part 33-2489
Installed this filter in a 2016 Acura RDX.  Hard to notice if power has improved, even minimally. Have noticed slight decrease in MPG. I do appreciate knowing this should be my last air filter purchase needed for the life of the vehicle. Not sure if it makes sense for K&N to engineer an air induction option to increase power since Acura did a decent job with that already. But if they do, I could be a potential buyer.

Brian Haupt
Weare, New Hampshire
Wednesday, March 15, 2017 - Part 33-2489
My Acura RX has more pick up but the gas mileage has decreased.

Keith Anklam
Brush Prairie, Washington
Tuesday, January 17, 2017 - Part 33-2489
When holding this filter you can tell its a much better quality product then Hondas cheap stock filter. Putting this filter in was headache free and the fit was very good.

Paul Femiak
Edmonton, Canada
Monday, November 28, 2016 - Part 33-2489
Love the delivery. Ordered Tuesday before noon, received next day. Product is drop in ready. Fairly easy to clean ( takes a bit of time to dry. I use a paper one as the K&N dries ) Gives the car just that little extra power for no money. I also use the oil filters by K&N.

Paul Nicholls
Caledon, Canada