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2003-2016 Subaru K&N Replacement Air Filter Meets Vehicle's Clean-Air Needs

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K&N 33-2304 Replacement Air Filter fits more than 230 models of 2003-2016 Subaru vehicles

The nearly square K&N 33-2304 Replacement Air Filter fits more than 230 models of 2003-2016 Subaru vehicles.

Raise your hand if you or your service shop have changed your car's air filter this year. Why might we not be seeing a big show of hands? Today's fuel-injected engines are so efficient and carbureted engines are so decreasingly prevalent, air filter service is not top of mind. Generally replacing or cleaning the air filter is called for about every 50,000 miles, or about every four years, depending on driving conditions.

For the millions of us who have a 2003-2016 Subaru as a daily driver, air filter service is certainly not a daily concern. In the American southwest and drier regions of South America, Asia, Australia, and North Africa we may think about it a bit more. Or, if we're doing some club racing or local rally driving, we are certainly attuned to the clean-air needs of our Subi's naturally aspirated flat four-cylinder boxer and turbocharged diesels.

For many years, K&N has made performance products available for Subaru vehicles from model years 1998 through 2011 worldwide, for engines from the 1.8L through 3.6L, and the 2.0L hybrid. Today K&N is also manufacturing the 33-2304 replacement air filter for the range of Subaru vehicles built from 2003 to 2016 (see the K&N applications list below and online). That's a lot of cars now able to benefit from K&N's unique and effective air filter design and engineering, something they've been perfecting since the 1960s.

Subaru engine compartment with K&N air filter

Most of the Subaru airboxes are in the front of the engine compartment and replacing the air filter is easily accomplished with no special tools.

Now, when it comes time to service the air filter, more than 230 models of Impreza, WRX, Outback, Legacy, Crosstrek, Forester, and Tribeca (plus certain Chrysler 300C and Fiat Thema diesels), the washable, reusable K&N 33-2304 replacement air filter can be the part of choice.

These distinctive all-wheel drive vehicles, all aimed at efficiency while being fun to drive, can be found everywhere on the world stage. Be it the Outback performing family wagon duties; the Legacy offering comfortable commutes; or the Tribeca spiriting you and six friends to the slopes for ski weekends, Subaru will be there.

Dream of your Forester crossover crossing the Sahara in the Dakar; envision your WRX burning up a Formula Drift course; imagine your Impreza sedan sidling up to the Prada store on Rodeo Drive, then give it fresh-flowing air with the 33-3204. It is designed to give your car better acceleration, boost the horsepower, and provide better filtration than the stock filter, without voiding a new-vehicle warranty. Its 10-Year/Million-Mile Warranty make it the last replacement air filter you'll need.

Caption

Clean and recharge the K&N 33-2304 air filter using the cleaner and recharger oil in the 90-5050 Filter Care Service Kit.

The airboxes on most of these vehicles are easily found in the front of the engine compartment (consult your owner's manual, and the installation instructions). They have clip closures on top and the intake hose doesn't need to be removed. The stock filter is removed and the K&N dropped back into the space. It is that simple.

Mark your calendar and when it's time to clean the filter, use K&N's 90-5000 filter care service kit. The recommended time frame is about every 50,000 miles, under normal highway driving conditions, but servicing can be performed more frequently if you got your wish to run that rally. The cotton gauze filter material can be sprayed with K&N's Power Kleen cleaner, rinsed, dried, and sprayed with recharging oil before replacing it in the airbox.

With this maintenance system you won't fill up the landfill with disposable filters and your Subaru will be breathing deeply for years to come.

The following Subaru, Fiat, and Chrysler models can be fitted with the K&N 33-2304 replacement air filter:
2016 SUBARU XV CROSSTREK 2.0L H4 - Exc. Hybrid
2016 SUBARU XV 2.0L H4 - Non-US
2016 SUBARU XV 2.0L H4 DIESEL
2016 SUBARU XV 1.6L H4
2016 SUBARU WRX STI 2.5L H4
2016 SUBARU WRX 2.0L H4
2016 SUBARU OUTBACK 3.6L H6
2016 SUBARU OUTBACK 2.5L H4
2016 SUBARU OUTBACK 2.0L H4 DIESEL
2016 SUBARU LEVORG 1.6L H4
2016 SUBARU LEGACY 3.6L H6
2016 SUBARU LEGACY 2.5L H4
2016 SUBARU IMPREZA WRX STI 2.5L H4
2016 SUBARU IMPREZA 2.0L H4
2016 SUBARU IMPREZA 1.6L H4
2016 SUBARU FORESTER 2.5L H4
2016 SUBARU FORESTER 2.0L H4
2016 SUBARU FORESTER 2.0L H4 DIESEL
2015 SUBARU XV CROSSTREK 2.0L H4 - Exc. Hybrid
2015 SUBARU XV 2.0L H4 - Non-US
2015 SUBARU XV 2.0L H4 DIESEL
2015 SUBARU XV 1.6L H4
2015 SUBARU WRX STI 2.5L H4
2015 SUBARU WRX 2.0L H4
2015 SUBARU OUTBACK 3.6L H6
2015 SUBARU OUTBACK 2.5L H4
2015 SUBARU OUTBACK 2.0L H4 DIESEL
2015 SUBARU LEVORG 1.6L H4
2015 SUBARU LEGACY 3.6L H6
2015 SUBARU LEGACY 2.5L H4
2015 SUBARU IMPREZA WRX STI 2.5L H4
2015 SUBARU IMPREZA 2.0L H4
2015 SUBARU IMPREZA 1.6L H4
2015 SUBARU FORESTER 2.5L H4
2015 SUBARU FORESTER 2.0L H4
2015 SUBARU FORESTER 2.0L H4 DIESEL
2015 LANCIA THEMA 3.0L V6 DIESEL
2014 SUBARU XV CROSSTREK 2.0L H4 - Exc. Hybrid
2014 SUBARU XV 2.0L H4 - Non-US
2014 SUBARU XV 2.0L H4 DIESEL
2014 SUBARU XV 1.6L H4
2014 SUBARU WRX STI 2.5L H4
2014 SUBARU WRX 2.5L H4
2014 SUBARU TRIBECA 3.6L H6
2014 SUBARU OUTBACK 3.6L H6
2014 SUBARU OUTBACK 2.5L H4
2014 SUBARU OUTBACK 2.0L H4 DIESEL
2014 SUBARU LEGACY IV 2.5L H4
2014 SUBARU LEGACY IV 2.0L H4
2014 SUBARU LEGACY IV 2.0L H4 DIESEL
2014 SUBARU LEGACY 3.6L H6
2014 SUBARU LEGACY 2.5L H4
2014 SUBARU IMPREZA WRX STI 2.5L H4
2014 SUBARU IMPREZA WRX 2.5L H4
2014 SUBARU IMPREZA 2.0L H4
2014 SUBARU IMPREZA 1.6L H4
2014 SUBARU FORESTER 2.5L H4
2014 SUBARU FORESTER 2.0L H4
2014 SUBARU FORESTER 2.0L H4 DIESEL
2014 LANCIA THEMA 3.0L V6 DIESEL
2013 SUBARU XV CROSSTREK 2.0L H4
2013 SUBARU XV 2.0L H4
2013 SUBARU XV 2.0L H4 DIESEL
2013 SUBARU XV 1.6L H4
2013 SUBARU WRX STI 2.5L H4
2013 SUBARU WRX 2.5L H4
2013 SUBARU TRIBECA 3.6L H6
2013 SUBARU OUTBACK 3.6L H6
2013 SUBARU OUTBACK 2.5L H4
2013 SUBARU OUTBACK 2.0L H4 DIESEL
2013 SUBARU LEGACY IV 2.5L H4
2013 SUBARU LEGACY IV 2.0L H4
2013 SUBARU LEGACY IV 2.0L H4 DIESEL
2013 SUBARU LEGACY 3.6L H6
2013 SUBARU LEGACY 2.5L H4
2013 SUBARU IMPREZA WRX STI 2.5L H4
2013 SUBARU IMPREZA WRX 2.5L H4
2013 SUBARU IMPREZA 2.0L H4
2013 SUBARU IMPREZA 1.6L H4
2013 SUBARU FORESTER 2.5L H4
2013 SUBARU FORESTER 2.0L H4
2013 SUBARU FORESTER 2.0L H4 DIESEL
2013 LANCIA THEMA 3.0L V6 DIESEL
2012 SUBARU XV 2.0L H4
2012 SUBARU XV 2.0L H4 DIESEL
2012 SUBARU XV 1.6L H4
2012 SUBARU WRX STI 2.5L H4
2012 SUBARU WRX 2.5L H4
2012 SUBARU TRIBECA 3.6L H6
2012 SUBARU OUTBACK 3.6L H6
2012 SUBARU OUTBACK 2.5L H4
2012 SUBARU OUTBACK 2.0L H4 DIESEL
2012 SUBARU LEGACY IV 2.5L H4
2012 SUBARU LEGACY IV 2.0L H4
2012 SUBARU LEGACY IV 2.0L H4 DIESEL
2012 SUBARU LEGACY 3.6L H6
2012 SUBARU LEGACY 2.5L H4
2012 SUBARU IMPREZA WRX STI 2.5L H4
2012 SUBARU IMPREZA WRX 2.5L H4
2012 SUBARU IMPREZA 2.0L H4
2012 SUBARU IMPREZA 2.0L H4 DIESEL
2012 SUBARU IMPREZA 1.5L H4
2012 SUBARU FORESTER TURBO 2.5L H4
2012 SUBARU FORESTER 2.5L H4
2012 SUBARU FORESTER 2.0L H4
2012 SUBARU FORESTER 2.0L H4 DIESEL
2012 LANCIA THEMA 3.0L V6 DIESEL
2011 SUBARU TRIBECA 3.6L H6
2011 SUBARU TRIBECA 3.0L H6
2011 SUBARU OUTBACK 3.6L H6
2011 SUBARU OUTBACK 2.5L H4
2011 SUBARU OUTBACK 2.0L H4 DIESEL
2011 SUBARU LEGACY IV 2.5L H4
2011 SUBARU LEGACY IV 2.0L H4
2011 SUBARU LEGACY IV 2.0L H4 DIESEL
2011 SUBARU LEGACY 3.6L H6
2011 SUBARU LEGACY 2.5L H4
2011 SUBARU IMPREZA WRX STI 2.5L H4
2011 SUBARU IMPREZA WRX 2.5L H4
2011 SUBARU IMPREZA 2.5L H4
2011 SUBARU IMPREZA 2.0L H4
2011 SUBARU IMPREZA 2.0L H4 DIESEL
2011 SUBARU IMPREZA 1.5L H4
2011 SUBARU FORESTER TURBO 2.5L H4
2011 SUBARU FORESTER 2.5L H4
2011 SUBARU FORESTER 2.0L H4
2011 SUBARU FORESTER 2.0L H4 DIESEL
2011 LANCIA THEMA 3.0L V6 DIESEL
2010 SUBARU TRIBECA 3.6L H6
2010 SUBARU TRIBECA 3.0L H6
2010 SUBARU OUTBACK 3.6L H6
2010 SUBARU OUTBACK 2.5L H4
2010 SUBARU OUTBACK 2.0L H4 DIESEL
2010 SUBARU LEGACY IV 2.5L H4
2010 SUBARU LEGACY IV 2.0L H4
2010 SUBARU LEGACY IV 2.0L H4 DIESEL
2010 SUBARU LEGACY 3.6L H6
2010 SUBARU LEGACY 2.5L H4
2010 SUBARU IMPREZA WRX STI 2.5L H4
2010 SUBARU IMPREZA WRX 2.5L H4
2010 SUBARU IMPREZA 2.5L H4
2010 SUBARU IMPREZA 2.0L H4
2010 SUBARU IMPREZA 2.0L H4 DIESEL
2010 SUBARU IMPREZA 1.5L H4
2010 SUBARU FORESTER 2.5L H4
2010 SUBARU FORESTER 2.0L H4
2010 SUBARU FORESTER 2.0L H4 DIESEL
2010 CHRYSLER 300C 3.0L V6 DIESEL
2009 SUBARU TRIBECA 3.6L H6
2009 SUBARU TRIBECA 3.0L H6
2009 SUBARU OUTBACK 3.0L H6
2009 SUBARU OUTBACK 2.5L H4
2009 SUBARU OUTBACK 2.0L H4 DIESEL
2009 SUBARU LEGACY IV 3.0L H6
2009 SUBARU LEGACY IV 2.5L H4 - 165BHP
2009 SUBARU LEGACY IV 2.0L H4
2009 SUBARU LEGACY IV 2.0L H4 DIESEL
2009 SUBARU LEGACY GT 2.5L H4
2009 SUBARU LEGACY 3.0L H6
2009 SUBARU LEGACY 2.5L H4
2009 SUBARU IMPREZA WRX STI 2.5L H4
2009 SUBARU IMPREZA WRX STI 2.0L H4
2009 SUBARU IMPREZA WRX 2.5L H4
2009 SUBARU IMPREZA WRX 2.0L H4
2009 SUBARU IMPREZA 2.5L H4
2009 SUBARU IMPREZA 2.0L H4
2009 SUBARU IMPREZA 2.0L H4 DIESEL
2009 SUBARU IMPREZA 1.5L H4
2009 SUBARU FORESTER 2.5L H4
2009 SUBARU FORESTER 2.0L H4
2009 SUBARU FORESTER 2.0L H4 DIESEL
2009 CHRYSLER 300C 3.0L V6 DIESEL
2008 SUBARU TRIBECA 3.6L H6
2008 SUBARU TRIBECA 3.0L H6
2008 SUBARU OUTBACK 3.0L H6
2008 SUBARU OUTBACK 2.5L H4
2008 SUBARU OUTBACK 2.0L H4 DIESEL
2008 SUBARU LEGACY IV 3.0L H6
2008 SUBARU LEGACY IV 2.5L H4 - 165BHP
2008 SUBARU LEGACY IV 2.0L H4
2008 SUBARU LEGACY IV 2.0L H4 DIESEL
2008 SUBARU LEGACY GT 2.5L H4
2008 SUBARU LEGACY 3.0L H6
2008 SUBARU LEGACY 2.5L H4
2008 SUBARU IMPREZA WRX STI 2.5L H4
2008 SUBARU IMPREZA WRX STI 2.0L H4
2008 SUBARU IMPREZA WRX 2.5L H4
2008 SUBARU IMPREZA WRX 2.0L H4
2008 SUBARU IMPREZA 2.5L H4
2008 SUBARU IMPREZA 2.0L H4
2008 SUBARU IMPREZA 2.0L H4 DIESEL
2008 SUBARU IMPREZA 1.5L H4
2008 SUBARU FORESTER 2.0L H4 - From 4/08
2008 SUBARU FORESTER 2.0L H4 DIESEL
2008 CHRYSLER 300C 3.0L V6 DIESEL
2007 SUBARU TRIBECA 3.0L H6
2007 SUBARU OUTBACK 3.0L H6
2007 SUBARU OUTBACK 2.5L H4
2007 SUBARU LEGACY IV 3.0L H6
2007 SUBARU LEGACY IV 2.5L H4 - 165BHP
2007 SUBARU LEGACY IV 2.0L H4
2007 SUBARU LEGACY GT 2.5L H4
2007 SUBARU LEGACY 2.5L H4
2007 SUBARU IMPREZA WRX STI 2.0L H4
2007 SUBARU IMPREZA WRX 2.0L H4
2007 SUBARU IMPREZA 2.0L H4
2007 SUBARU IMPREZA 1.5L H4
2007 SUBARU B9 TRIBECA 3.0L H6
2007 CHRYSLER 300C 3.0L V6 DIESEL
2006 SUBARU TRIBECA 3.0L H6
2006 SUBARU OUTBACK XT 2.5L H4
2006 SUBARU OUTBACK 3.0L H6
2006 SUBARU OUTBACK 2.5L H4
2006 SUBARU LEGACY IV 3.0L H6
2006 SUBARU LEGACY IV 2.5L H4 - 165BHP
2006 SUBARU LEGACY IV 2.0L H4
2006 SUBARU LEGACY GT 2.5L H4
2006 SUBARU LEGACY 2.5L H4
2006 SUBARU B9 TRIBECA 3.0L H6
2006 CHRYSLER 300C 3.0L V6 DIESEL
2005 SUBARU TRIBECA 3.0L H6
2005 SUBARU OUTBACK XT 2.5L H4
2005 SUBARU OUTBACK 3.0L H6
2005 SUBARU OUTBACK 2.5L H4
2005 SUBARU LEGACY IV 3.0L H6
2005 SUBARU LEGACY IV 2.5L H4 - 165BHP
2005 SUBARU LEGACY IV 2.0L H4 - 138/165BHP
2005 SUBARU LEGACY GT 2.5L H4
2005 SUBARU LEGACY 2.5L H4
2005 CHRYSLER 300C 3.0L V6 DIESEL
2004 SUBARU OUTBACK 3.0L H6 - Non-US, 245BHP
2004 SUBARU OUTBACK 2.5L H4 - Non-US
2004 SUBARU LEGACY IV 3.0L H6
2004 SUBARU LEGACY IV 2.5L H4 - 165BHP
2004 SUBARU LEGACY IV 2.0L H4 - 138BHP
2003 SUBARU OUTBACK 3.0L H6 - Non-US, 245BHP
2003 SUBARU OUTBACK 2.5L H4 - Non-US, 165BHP
2003 SUBARU LEGACY IV 3.0L H6
2003 SUBARU LEGACY IV 2.5L H4 - 165BHP
2003 SUBARU LEGACY IV 2.0L H4 - 138BHP

You can view all the K&N performance products for any vehicle by using the Search by Vehicle tool and you can find a local K&N retailer by plugging your location into the K&N Dealer Search as well.


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K&N Engineering in Riverside California is the world's leading manufacturer of washable performance air filters and air intake systems. K&N invented the reusable high flow cotton air filter in 1969 and has been perfecting the technology ever since. K&N is a world class filtration company selling air filters, oil filters, and intakes in over 50 countries. K&N sells over 5,000 products designed for cars, trucks, motorcycles, engines, and industrial applications. From their Million Mile Warranty to their Consumer Protection Pledge, K&N stands behind their products and their consumers 100%. The distinctive K&N logo represents performance from one of the original performance companies. For more information, visit knfilters.com.