Update your ride with Cavalier 4DR. Throttle Body Spacers increase the gap between your air intake and engine block. Revitalize your sedan with Cavalier 4DR. Air is added to the combustion cycle more efficiently with Throttle Body Spacers. Change the stance of your car with Cavalier 4DR. Throttle Body Spacers add horsepower. Get the added benefit of better mpg with a Throttle Body Spacer.