How to Change Engine Air Filter: 2004 Subaru Legacy L 2.5L 4 Cyl. Wagon
Subaru Legacy Model Years - 2000, 2001, 2002, 2003, 2004
Step-by-step instructions showing where is the engine air filter and how to remove the housing and replace the Legacy air filter
Hans Angermeier is an ASE certified Maintenance and Light Repair Technician and has produced over 100,000 videos showing drivers how to fix things on their cars. He has broad expertise on basic repair procedures covering the majority of cars on the road. Over the past 10 years, Hans has been focused on building CarCareKiosk, which is visited by millions of drivers each month.
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The engine air filter in your 2004 Subaru Legacy cleans the air that enters your engine. You should change the filter on your Legacy at least once a year or every 20,000 miles, whichever comes first. If you drive in dusty or sandy conditions, you should change your filter more frequently. A dirty air filter will cause your Legacy to lose 1 - 3 mpg, depending on your driving, you can save 70 - 100 gallons of gas per year simply by changing your filter regularly. The video above, shows you where the engine air filter is located in your Legacy and how to change it!
In addition to improving the fuel economy of your Legacy, regularly replacing your air filter will put less strain on your engine. These filters are fairly inexpensive, so check out our parts page for great deals and coupons on a new one (tip: buy several, when you go to check the filter on your Legacy, you can easily swap it for a new one if it is dirty). Be sure to adhere to a recurring schedule for your 2004 Subaru Legacy replacement.
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