Update your beast with new F450 Throttle Body Spacers. Throttle Body Spacers increase the gap between your air intake and engine block. Make your truck look tough with new F450 Throttle Body Spacers. Air is added to the combustion cycle more efficiently with Throttle Body Spacers. The ride is a little more intense with new F450 Throttle Body Spacers. Throttle Body Spacers add horsepower. Get the added benefit of better mpg with a Throttle Body Spacer.