The Denso 12V Clockwise Starter is designed to provide maximum cranking torque under all conditions. It uses a compact high-speed motor that is decelerated by 1/3 to 1/4 to drive the pinion gear. This starter is environmentally designed to start in all weather conditions and is equipped with a torque-tested and lubricated clutch assembly for superior performance. It is compatible with Mack Trucks with Cummins engines. With its 12V voltage and 10 teeth, this starter is sure to get your engine running in no time. FleetPride is your First Click in Heavy Duty®.