aFe Power Magnum FORCE 51-10852 BMW M5 (E39) Performance Intake System (Dry, 3-Layer Filter) Produces an additional 10 horsepower and 10 lbs. x ft. torque 3-Layer non-oiled, washable synthetic media for the perfect balance of performance, protection and convenience Dual 16 gauge, powder-coated heat shields Heat-insulating molded plastic tube replaces the stock intake tract This product is 50-state legal for 2000-2003 models (CARB E.O Number D-550-3)