Prepare your semi to be Ready for the Road Ahead™, with the Delco-Remy 39MT 24V 12-Tooth Starter Motor with OCP that provides fast power from a cold engine. Due to its partnership with the battery, this replacement starter is able to activate the engine flywheel after the press of a button or turn of a key. Constructed with sturdy components to keep each starter at its best for substantial periods of time. FleetPride is your First Click in Heavy Duty®.