| Item | Part No. | Part Name | Qty | Serial No. |
| 21K-966-K212 | BOOM ASS'Y, FIRST | K40001- | ||
| 1 | 07145-00080 | SEAL | K40001- | |
| 2 | 21K-70-71311 | BUSHING | K40001- | |
| 3 | 21K-70-71291 | BUSHING | K40001- | |
| 4 | 21K-966-K161 | BOOM, FIRST | K40001- | |
| 5 | 01572-21016 | SEAT (WELDED) | K40001- | |
| 6 | 01572-21019 | SEAT (WELDED) | K40001- | |
| 7 | 20E-70-K1520 | SEAT (WELDED) | K40001- | |
| 8 | 21K-62-74231 | BRACKET (WELDED) | K40001- | |
| 9 | 21K-70-31280 | SEAT (WELDED) | K40001- | |
| 10 | 21K-70-31290 | SEAT (WELDED) | K40001- | |
| 11 | 566-16-11240 | BOSS (WELDED) | K40001- | |
| 12 | 21K-70-71370 | PIN | K40001- | |
| 13 | 207-70-73261 | SPACER¤ 1.0MM | K40001- | |
| \0\207-70-73260 | SPACER¤ 1.0MM | K40001- | ||
| 14 | 20Y-70-31372 | SPACER¤ 2.0MM | K40001- | |
| \0\20Y-70-31371 | SPACER¤ 2.0MM | K40001- | ||
| 15 | 205-70-66580 | PLATE | K40001- | |
| 16 | 01010-81230 | BOLT | K40001- | |
| 17 | 01643-31232 | WASHER | K40001- |