Ensure your semi is Ready for the Road Ahead with rapid power from a cold engine, with the Delco-Remy 31MT 12V 10-Tooth Starter Motor. Thanks to its partnership with the battery, this replacement starter works to activate the engine flywheel after the turn of a key or press of a button. Crafted with durable components to keep each starter at its best for extended periods of time. FleetPride is your First Click in Heavy Duty .