518-1209 518-1210 518-1211 5181209 5181210 5181211 349E em will send free parts to repair. And this model Final Drive used for excavator hitachi

518-1211 518-1212 521-3847 5181211 5181212 5213847 349D2 and With 6-12 months warranty，Any quality problem will send free parts to repair. And this model Final Drive used for excavator hitachi