This is a complete engine overhaul kit for Allis Chalmers tractors. Complete kits contain sleeves, pistons, rings, pins, and complete gasket set, main and rod bearings. *Please specify bearing sizes when ordering* This kit is used on model 160 all with the 152 CID 3 cylinder diesel engine. This is a standard 3.6" bore kit. Be sure to add me to your ! Thanks For Your Business!!