... china 4. apply to 6CT cummins engine air compressor 39725311.Cummins engine air compressor2.Dongfeng engine air compressor3.39725314.DCEC brand all cummins parts ... gasket3Oil Filter,Fuel Filter, Oil Cooler Core...4Piston,Piston Pin, Piston Cooling Nozzle,Piston Ring, Piston Pin 5Oil Pump,Water Pump, injection pump6Camshaft, Crankshaft ...