The aFe Stage 2 sealed cold air intake produces up to 28 HP and up to 54 lbs. x ft. torque while out flowing the factory intake by up to 41%. Fully sealed in a durable commercial grade designed rotomolded air box, this air intake system features a 5-1/2" Pro-GUARD 7 washable/reusable, high filtration conical air filter that provides maximum filtration (99.7% efficient) with increased air flow. This intake system features a heat-insulating molded plastic intake tube and a unique turbo adaptor that funnels air into the turbo for improved volumetric efficiency and maximum performance while lowering Intake Air Temps (I.A.T). In addition, this system features an innovative Dynamic Air Scoop (D.A.S.) over the battery that efficiently channels additional air from the front grille into the air box reducing air intake temperatures by 25 degrees over the factory intake. The pre-oiled Pro-GUARD 7 performance air filter is constructed with 100% polyurethane for long life and multiple cleaning cycles. Utilizing factory mounting points, this system is easy to assemble and easy to install. 50-state legal for F-250/350 models. Fully Sealed DesignÂ aFe engineers have designed a very sophisticated 2-piece sealed intake housing that keeps out warm underhood air and brings in cooler, outside air for a denser intake charge. 5-1/2" 360 Degree Air Filter A cone 360 degree round air filter is used for maximum air flow and filtration (99.7% efficient). The patented Pro-GUARD 7 performance air filter features 5-layers of progressive cotton gauze and 2-layers of synthetic media and is constructed with 100% polyurethane for long life and multiple cleaning cycles. Hassle-Free InstallationÂ aFe has developed this intake to provide a hassle-free installation that utilizes all factory mounting locations. Features: CARB EO# D-550-24 +41% Increase In FlowÂ Pro Guard 7 Filter Media Stage 2 Intake With Dynamic Air Scoop CA Residents: CARB E.O. Number on file - LEGAL for use in California.