aFe Power Magnum FORCE 75-10612 GM Diesel Truck 04.5-05 V8-6.6L (td) LB7/LLY Performance Intake System (Oiled, 7-Layer Filter) Outflows the factory intake by 69% . Produces an additional 17 horsepower and 39 lbs. x ft. torque 7-Layer oiled, washable media with 5 layers of progressively finer cotton gauze and 2 layers of synthetic material for high-performance air flow with maximum filtration efficiency, the only filtration media of its kind to be granted a U.S. patent One-piece powder-coated heat-shield with an attractive black diamond plate cover Heat-insulating molded plastic tube replaces the stock intake tract This product is 50-state legal (CARB E.O Number D-550-4)