PRODUCT HIGHLIGHTSStandardized Size Piston Unit: Unified OD100mm & 34*84mm piston pin size for 4D30 engine, convenient for overseas importers to realize standardized inventory classification and stock management Heavy-Duty Wear-Resistant Aluminum Alloy: Adapted to harsh working conditions of commercial vehicles and construction machinery to reduce after-sales return and complaint ratio for wholesalers Complete Serial OEM Number Marking: Integrated ME012166/ME012001/ME012051