| Item | Part No. | Part Name | Qty | Serial No. |
| 258-40-12300 | GEAR CASE ASS'Y | 1001- | ||
| 1 | 258-40-12310 | CASE | 1001- | |
| 2 | 258-40-12320 | CASE | 1001- | |
| 3 | 258-40-12330 | GASKET | 1001- | |
| 4 | 2691-4-11250 | BOLT | 1001- | |
| 5 | 01580-01613 | NUT | 1001- | |
| 6 | 01602-01648 | WASHER | 1001- | |
| 7 | 01010-31650 | BOLT | 1001- | |
| 8 | 01010-31645 | BOLT | 1001- | |
| 9 | 01602-01648 | WASHER | 1001- | |
| 10 | 01580-01613 | NUT | 1001- | |
| 11 | 2692-3-11150 | PLUG | 1001- | |
| 12 | 265-30-21310 | PLUG | 1001- | |
| 13 | 265-30-21460 | GAUGE | 1001- | |
| 14 | 258-40-12530 | CAP | 1001- | |
| 15 | 01010-30825 | BOLT | 1001- | |
| 16 | 01602-00825 | WASHER | 1001- | |
| 17 | 258-40-13300 | BRACKET | 1001- | |
| 18 | 258-40-13400 | BRACKET | 1001- | |
| 19 | 01010-31640 | BOLT | 1001- | |
| 20 | 01602-01648 | WASHER | 1001- | |
| 21 | 258-40-12520 | GASKET | 1001- |