173-3381 200-3366 1733381 2003366 320C and With 6-12 months warranty，Any quality problem will send free parts to repair. And this model Hydraulic Pump used for excavator main pump cat 320b, cat 320 main pump

162-0917 126-2073 1620917 1262073 320B and With 6-12 months warranty，Any quality problem will send free parts to repair. And this model Hydraulic Pump used for excavator main pump cat 320b