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AEM Dry Flow Panel Filter 08-15 WRX / 08-15 STI PANEL FILTER FOR 2008-17 WRX/STI CONE FILTER - 3.125" MOUTH 02-14WRX / 04-14 STI
Direct fit for your stock airbox Helps The Stock Air Box Breathe Better. Helps Your Engine Breath Better.
Perrin Replacement Filter 08-14 WRX / 08-17 STI
Replacement Fiter