Improve your Ford's condition with new Expedition Throttle Body Spacers. Throttle Body Spacers increase the gap between your air intake and engine block. Tell everyone you're on a mission with Expedition Throttle Body Spacers. Air is added to the combustion cycle more efficiently with Throttle Body Spacers. Show off your Ford with new Expedition Throttle Body Spacers. Throttle Body Spacers add horsepower. Get the added benefit of better mpg with a Throttle Body Spacer.