Improve Engine Performance. Unleash your Coyote powered truck's hidden power with a SR Performance Throttle Body Spacer. The SR Performance throttle body spacer increases plenum volume to improve the low to mid range torque from your truck's stock 5.0L engine, with noticeable gains seen between 800 to 2500 RPM.Better Fuel Economy. The SR Performance Throttle Body Spacer not only improves the performance of your truck, but with its unique Spiral Bore design it also improves fuel efficiency. The Spiral Bore "spins" the incoming air for improved atomization of the air fuel mixture for better combustion.Billet Aluminum Construction. CNC machined from high quality billet aluminum the SR Performance Throttle Body Spacer includes all the necessary hardware required for a simple straightforward bolt-on installation.Application. The SR Performance Throttle Body Spacer is specifically designed to fit the 2011-2020 5.0L V8 truck's with a factory throttle body installed. No tune required.