aFe 30-10178 Magnum FLOW Pro 5R Air FilteraFe 30 10178 Magnum FLOW Pro 5R Air Filter Constructed with 100% polyurethane on all four sides, this high flow, oiled OE replacement performance filter will out flow stock paper filter by 178% for improved horsepower and torque. The Pro 5R air filter uses five layers of cotton gauze media which provides maximum airflow for best performance results. Washable and reusable for multiple cleaning cycles, the tall open evenly space pleats provide excellent