Disassembling Engines made Easy SMP Specialty Tools introduces the Scott Piston Puller, a unique tool that makes in-frame overhauls quicker, easier and more profitable. The company says the tool virtually eliminates the possibility of damage to internal engine components during piston removal. The Puller is suitable for most popular small and medium sized combustion bowl type diesel engines and the tool's expanding mandrel "grips" the combustion bowl with high torque for easy removal. Built of rugged steel and weighing only 3 lbs., typical application include truck, bus, industrial and marine diesel engines and the tool comes with a one-year limited warranty.