... box, nozzle couple, fuel pump, plunger, bearing shell ,intake and exhaust valve, piston ring, sel ring ,O-ring, and some kinds of oil separator and turbocharger and ... crankshaft, engine frame, engine bed, cylinder liner, o ring for cylinder liner, cylinder head packing, cylinder cover, ... rod, piston crown, piston skirt, piston rod, stuffing box, suction valve spindle, suction valve seat, suction valve ...