| Item | Part No. | Part Name | Qty | Serial No. |
| Note: This list covers following specifications: Boom, 100 Hours Greasing Type, Quick Coupler. | ||||
| 21K-70-00541 | Boom Assembly | B30001- | ||
| 1 | Boom | B30001- | ||
| 2 | 20Y-70-11651 | Seat,Welded | B30001- | |
| 3 | 21K-62-74211 | Bracket, Welded | B30001- | |
| 4 | 21K-62-74221 | Bracket, Welded | B30001- | |
| 5 | 21K-62-74231 | Bracket,Welded | B30001- | |
| 6 | 203-70-51221 | Seat, Welded | B30001- | |
| 7 | 21K-62-74280 | Bracket, Welded | B30001- | |
| 8 | 21K-70-31390 | Bushing | B30001- | |
| 9 | 07145-00080 | Seal, Dust | B30001- |