aFe 72-91117-MA Magnum FLOW Pro GUARD7 Air Filters (Pair)aFe 72 91117 MA Magnum FLOW Pro GUARD7 Air Filters (Pair) With five layers of progressively finer mesh cotton gauze media and two layers of synthetic media and a 100% polyurethane top and base, this high flow "oiled" inverted conical performance filter provides excellent airflow for maximum horsepower and torque. Washable and reusable for multiple cleanings, the tall, open, evenly spaced pleats provide excellent dust holding capacity for longer