piston air compressor: 1,cummins parts 2,KT38 series parts 3,made in China and Improt 4,improt package piston air compressor: 1 Original Cummins engine ... Core4Piston,Piston Pin, Piston Cooling Nozzle,Piston Ring5Oil Pump,Water Pump,fuel transfer pump.fuel injection pump injector6Camshaft, Crankshaft, Main Bearing, thrust bearing, crankshaft ...