... plated 3.ISO9002, QS9000, TS16949 engine piston ring set OEM manufacturer 1.Dia from 90mm---139mm2.Engine Type: W04D,EH700, M10U, ... ring, piston, engine bearing, cylinder liner, liner kit, engine valve, valve seat and guide, thrust washer, bush, nozzle and gasket. DWIT engines:------------------------ ... according to samples or drawings. Desire our cooperation. engine piston ring set OEM manufacturer