The Caterpillar radiator is designed to cool the heated coolant with a stream of air. To increase heat transfer, the radiator has a special tubular device. Along with the main radiator, an oil cooler and an exhaust gas recirculation cooler can be installed in the cooling system. A Caterpillar oil cooler serves to cool the oil in the lubrication system.
Coolant circulation in the system is provided by a Caterpillar centrifugal pump. A Caterpillar centrifugal pump can be driven by a gear drive, a Caterpillar belt, and others. On some turbocharged engines, an additional coolant circulation pump connected by the engine control unit is installed to cool the charge air and the turbocharger.