509-5931 507-1115 165-5777 5095931 5071115 1655777 318D 318D2 em will send free parts to repair. And this model Final Drive used for excavator hitachi

197-7180 509-5931 1977180 5095931 316E 316F and With 6-12 months warranty，Any quality problem will send free parts to repair. And this model Final Drive used for excavator hitachi