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About Air Filters
Bringing a brand new air filter to your BMW 4-Series is an easy and effective way to introduce a better flow of oxygen into your engine. More oxygen means more combustion, which in turn means more horsepower - it's just simple physics. At AutoAccessoriesGarage, we have all the top performing air filters from K&N, Airraid, and more! Plus we'll always ship for free, meaning you save more money that you can spend on your BMW 4-Series.
