Upgrade your existing starter's performance with a new Powermaster Ultra Duty Diesel starter. These starters are stronger, faster, and tougher! They are able to turn over the most aggressive diesel engines in the harshest of environments. Featuring a 3.80:1 gear reduction, 260 ft. lbs. of torque and 3.6 horsepower these Powermaster Ultra Duty Diesel starters can handle anything. 2007-2015 Cummins 6.7L