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The aFe MagnumFLOW P5R Drop-In Air Filter fits select Subaru Forester, Impreza, Outback, WRX and STI models and is built as a high-flow, oiled OE replacement to increase airflow for improved horsepower and torque. Five layers of progressively finer cotton gauze provide filtration and dust-holding capacity. The washable, reusable filter has deep pleats, a polyurethane boxed frame and an integrated bump seal for a tight, leak-free fit in the factory housing.
aFe MagnumFLOW Air Filters OER P5R A/F P5R Subaru Impreza WRX STI 08-11 H4-2.5L
