aFe MagnumFLOW Air Filters OE Replacement PRO 5R Porsche Boxster S 05-12 H6 3.4LConstructed with 100 percent polyurethane on top and bottom, this high flow, oiled OE replacement performance filter will outflow the stock filter for improved horsepower and torque. 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 spaced pleats provide excellent dust holding capacity for longer service cycle between