aFe Magnum FLOW Pro DRY-S OE Replacement Air Filter | Multiple Fitments (31-10260)Magnum FLOW Pro DRY S Air Filter by aFe Power This filter features 3 layers of progressive media to provide maximum flow with excellent filtration. The progressive layering of media allows the filter to flow at high levels even when dirty. The Pro DRY S non oiled synthetic air filter requires no oils for maximum convenience. aFe performance air filters use a rounded, evenly spaced pleat design which produces more useable filter surface area for