Take pride in your Buick with new GS400 Intercooler Kit. The air rushing into the engine is hot, but with an Intercooler Kit, it will be colder. Bring the Buick back to life with new GS400 Intercooler Kit. Colder air is denser than hot air and an Intercooler Kit helps turbo and supercharged vehicles to produce more horsepower. Keep your classic looking new with GS400 Intercooler Kit. An Intercooler Kit makes a big impression on others. Show off your new Intercooler Kit at your next meet.