... quality 5.Long life, low noise MITSUBISHI 6D31 used engine assy, 6D31 original complete engine assembly MITSUBISHI ... motor assemblies, pilot valve, pusher, adjust fitting, adjust cylinder, controller, monitor, main & service valve, solenoid valve, sensor, starting motor ... original or second- hand excavator parts. MITSUBISHI 6D31 used engine assy, 6D31 original complete engine assembly HitachiEX3600 4396991 ...