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aFe Direct Fit Magnum Pro S Performance Air Filter - 08+ WRX/STI / 14+ Forester / 13+ Crosstrek

Both filters are constructed with 100% polyurethane on all four sides, your choice between a high flow "oil-free" filter or oiled filter. These filters will outflow the stock paper filter for improved horsepower and torque.

Dry Filter:

Two layers of progressively finer mesh synthetic media provide maximum convenience and easy maintenance. Washable and reusable for multiple cleaning cycles, the tall open evenly spaced pleats provide excellent dust holding capacity for longer service cycle between cleanings

Oiled Filter:

Five layers of progressively finer mesh cotton gauze media provide maximum airflow for best performance results. Washable and reusable for multiple cleaning cycles, the tall open evenly space pleats provide excellent dust holding capacity for longer service cycle between cleanings. Integrated urethane bump seal insures tight, no leak seal over the life of the filter.


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