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K&N 33-2232 Air Filter

Replacement Filters > Replacement Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.9 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 33-2232 Air Filter fits some Subaru Alcyone, Subaru Forester, Subaru Impreza, Subaru Impreza II, Subaru Impreza II WRX, Subaru Impreza II WRX STI, Subaru Impreza WRX, Subaru Impreza WRX STi, Subaru Legacy, Subaru Legacy I, Subaru Legacy II, Subaru Legacy Outback, Subaru Liberty, Subaru Loyale, Subaru Outback, Subaru Outback I, Subaru RX, and Subaru SVX 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
Height1.063 in (27 mm)
Outside Length11 in (279 mm)
Outside Width6.563 in (167 mm)
Package Contents1 Air Filter
Package Quantity1
Product StylePanel Air Filter
Weight1 lb (0.5 kg)
Filter Re-Oiling Amount1.05 oz (31 ml)
Product Box Height13.56 in (345 mm)
Product Box Length7.72 in (196 mm)
Product Box Width1.75 in (44 mm)

K&N 33-2232 Air Filter Product Reviews

Tuesday, March 6, 2018 - Part 33-2232
Best filter ever AAAAA

Juan Fernandez
Monterey, California
Wednesday, August 2, 2017 - Part 33-2232
Brilliant service. Won't go anywhere else.

Ian Jeffery
Stogursey, United Kingdom
Saturday, June 3, 2017 - Part 33-2232
Finally I had decided to change original filter to K&N. Overall performance of 2.0 liter boxer had truelly increased and fuel consuption became more efficient. Thank you for a great product.

GT Gennadiy
Kyiv, Ukraine
Saturday, February 18, 2017 - Part 33-2232
Everything was allright. Order, shipping, package, installation instructions. I am 100% satisfied.

Dusan Chrenko
Nitra, Slovakia
Wednesday, December 14, 2016 - Part 33-2232
There was a delay in the delivery here, because the bill was not sent with the package.

Alejandro Cardenas
Bogota D.C., Colombia
Tuesday, November 8, 2016 - Part 33-2232
Great website, very easy to find what you want. Fast delivery, items as described. Would highly recommend.

Lorna Meadows
Grantham, United Kingdom
Saturday, October 22, 2016 - Part 33-2232
Excellent product with clear, but unnecessary installation instructions. Car seems to have slightly benefited from the easier breathing.

Raymond Plunkett