Description:Cat® Control Module is a type of electronic control unit that controls a series of actuators on an internal combustion engine to ensure optimal engine performance. The ECU receives information from various sensors on the engine, compares that information to predetermined programming decided on by the manufacturer, and then sends outputs to the spark plugs, fuel injectors and other components to allow the engine to run as effectively as possible.Application:Consult your owner's manual or contact your local Cat Dealer for more information.