497-8498 334-9937 497-8501 4978498 3349937 4978501 336E and With 6-12 months warranty，Any quality problem will send free parts to repair. And this model Hydraulic Pump used for excavator hitachi

488-4577 497-8498 4884577 4978498 350E and With 6-12 months warranty，Any quality problem will send free parts to repair. And this model Hydraulic Pump used for excavator hitachi