The Black Series alternator is rated @ 215A Hot and 235A Cold, The unit is powder coated for maximum protection and looks the part  for your performance or 4x4 vehicles. These have the ability to run vehicles with high electrical loads such as Thermo-Fans,Injection Systems,Air Conditioning,Electric Steering,monitoring systems,upgraded light systems,winches and maintaining the barrey at the desired levels With all high amperage alternators, please read the instructions in the packaging as changes will need to be made to the vehicles wiring.