The Garrett Water/Air Intercooler 873213-6002 is a high-performance cooling system designed for turbocharged engines. It is made by Garrett, a leading manufacturer of automotive components. This intercooler uses a combination of water and air to reduce the temperature of the compressed air from the turbocharger before it enters the engine. This results in increased power and efficiency, as cooler air is denser and contains more oxygen for combustion. The intercooler is made with high-quality materials and is engineered to withstand high boost pressures and extreme temperatures. It is a popular choice among tuners and racers looking to improve the performance of their vehicles.