AFE Silver Bullet Throttle Body Spacer Ford Superduty 2020 V8 7.3L Dyno-Proven Gains up to +14 HP & +15 Lbs. x Ft. TQ Billet Aluminum 6061-T6 Construction Serrated/Helix Combination Design for Optimum Airflow into the Combustion Chamber Installation is a Snap Serrated/Helix Design:The serrated/helix design creates air turbulence in the intake manifold. This turbulence increases the air pressure in the combustion chamber resulting in increased horsepower, torque and improved throttle response. The Serrated/Helix combination design also reduces intake whistle that occurs with other helix only designs.6061-T6 Billet Aluminum Construction:All Silver Bullet Throttle Body Spacers are precision machined from 6061-T6 billet aluminum for lightweight, high strength and perfect fit and finish.Installation Is A Snap:This Silver Bullet throttle body spacer uses all factory mounting locations and a gasket providing stability and a hassle-free installation. This part will not work with an aftermarket intake system. Emissions Disclaimer:Some or all of the applications listed are 50-state exempt, please see CARB EO# D-550-43 for details.