The GMC throttle body spacer is a simple vehicle upgrade accessory that can make quite a difference in the amount of horsepower produced by your engine. The GMC throttle body spacer is modeled after the design and function of the spacer plate used commonly under the carburetor to increase the power and performance of racing vehicles. The principle of this spacer has been applied to the modern throttle body engines to produce a similar increase in engine power output. The GMC throttle body spacer creates a vortex of air that is capable of adding a significant increase in the horsepower produced, in some engines the increase can be up to twenty horsepower. The GMC throttle body spacer does this by increasing the distance between the factory throttle body and the intake manifold to create a higher air velocity, which mixes the air with the fuel more thoroughly as it passes the injectors. This process allows the air and fuel mixture to burn more efficiently in the combustion chambers of the engine, which provides better power and performance. The fuel efficiency of the vehicle is also enhanced with the installation of the GMC throttle body spacer, making a difference of up to five miles per gallon in some cases. The installation of the GMC throttle body spacer will not affect your manufacturers warranty, and is relatively simple job for the do-it-yourself type to manage at home with a basic tool set. We carry a quality selection of the GMC throttle body spacer in our online catalog at great prices.