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K&N 33-2154 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   9 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 33-2154 Air Filter fits some Subaru Baja, Subaru Baja Sport, Subaru Forester, Subaru Impreza, Subaru Impreza RS, Subaru Impreza WRX, Subaru Impreza WRX STi, Subaru Legacy, Subaru Legacy III, and Subaru Outback 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
Filter Re-Oiling Amount1.39 oz (41 ml)
Height0.938 in (24 mm)
Outside Length14.5 in (368 mm)
Outside Width6.5 in (165 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
Weight1.2 lb (0.5 kg)

K&N 33-2154 Air Filter Product Reviews

Friday, July 8, 2016 - Part 33-2154
No problem with the order, product, or preparation and installation. Very satisfied.

Julia Bowen
Saint Louis, Missouri
Wednesday, June 1, 2016 - Part 33-2154
Seems to be more acceleration and slightly better gas mileage. Installed filters on a 2001 and 2009 Subaru Foresters. The 2009 shows mpg on the dash display and average mpg. The average is up 2 to 3 mpg on each long trip so far.

Jerry Kalick
Monday, March 14, 2016 - Part 33-2154
Perfect fitment, great quality, only thing I could possibly ask for is a dry version. But it's a great product none the less.

Dana Orlando
Monday, February 22, 2016 - Part 33-2154
Observed a discernible difference in performance, mostly above 4,000 rpm...on cool mornings, pulled strongly to over 6,000 rpm.

Bill Anderson
White Plains, New York
Monday, December 14, 2015 - Part 33-2154
Love K&N.

Laurie Fidler
Montoursville, Pennsylvania
Friday, September 26, 2014 - Part 33-2154
More then satisfied with my whole experience. Thank you.

Catherine M Macera
New York
Friday, April 25, 2014 - Part 33-2154
Excellent product, great price. My '02 Legacy GT is breathing easy now and it really smoothed out the acceleration. Conventional filters are no longer an option for me.

Jose Mata
Pomona, California