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Amazon.com: K&N Engine Air Filter: Increase Power & Acceleration, Washable, Replacement Car Air Filter: Compatible 2003-2019 Subaru H4/H6 1.5/2.0/2.5/3.6L (Forester, Legacy, Outback, Impreza, WRX, Levorg),33-2304 : Automotive
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HPS Drop In Panel High Flow Air Filter -22 Subaru Forester 2.5L HPS-457374 - HPS Performance Products
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Amazon.com: K&N Cold Air Intake Kit: Increase Acceleration & Engine Growl, Guaranteed to Increase Horsepower up to 18HP: Compatible with 2.5L, H4, 2004-2006 SUBARU (Forester Turbo), 69-8002TS : Automotive
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