Hitachi excavator part NO. Seal Kit EX200-1 4206018 BOOM CYL - 4206019 ARM CYL - 4206020 BUCKET CYL - 9062438SK CENTER JOINT - 9063666SK TRACK ADJUST EX200-2/3 4286774 BOOM CYL - 4286780 ARM CYL - 4286784 BUCKET CYL - 9101521SK CENTER JOINT - 9090028SK TRACK ADJUST EX200-5 4364915 BOOM CYL - 4364916 ARM CYL - 4364917 BUCKET CYL - 9101521SK CENTER JOINT - 9144658SK TRACK ADJUST. 45*45*30 cm.