A wide selection of 4000s are available. The air rushing into the engine is hot, but with an Intercooler Kit, it will be colder. New 4000s come in many styles. Colder air is denser than hot air and an Intercooler Kit helps turbo and supercharged vehicles to produce more horsepower. Keep your car standing out with new 4000s. An Intercooler Kit makes a big impression on others. Show off your new Intercooler Kit at your next meet.