| Item | Part No. | Part Name | Qty | Serial No. |
| 259-58-27100 | OIL PUMP ASS'Y,HST | 2001- | ||
| THIS ASSEMBLY CONSISTS OF ALL PARTS SHOWN IN FIGS.6101 TO 6104. | ||||
| 1 | 258-81-21540 | HOUSING | 2001- | |
| 2 | 258-81-21210 | PLUG | 2001- | |
| 3 | 258-81-21170 | PLUG | 2001- | |
| 4 | 258-81-21490 | PLUG | 2001- | |
| 5 | 258-81-21590 | PLUG | 2001- | |
| 6 | 258-81-22711 | PLUG | 2001- | |
| 7 | 258-81-22650 | PLUG | 2001- | |
| 8 | 258-81-22210 | ADAPTER | 2001- | |
| 9 | 258-81-22220 | O-RING (K3) | 2001- | |
| 10 | 258-81-22230 | SCREW | 2001- | |
| 11 | 258-81-22240 | SCREW | 2001- | |
| 12 | 258-81-22250 | PLUG | 2001- | |
| 13 | 259-82-22440 | VALVE | 2001- | |
| 14 | 258-81-21750 | SPRING | 2001- | |
| 15 | 258-81-21760 | PLUG | 2001- | |
| 16 | 258-81-21160 | O-RING (K3) | 2001- | |
| 17 | 258-81-21150 | VALVE | 2001- | |
| 18 | 258-81-21140 | SPRING | 2001- | |
| 19 | 258-81-21110 | SHIM | 2001- | |
| 20 | 258-81-21120 | PLUG | 2001- | |
| 21 | 258-81-21130 | O-RING (K3) | 2001- | |
| 22 | 258-81-22430 | VALVE | 2001- | |
| 23 | 258-81-21550 | RING,BACK-UP | 2001- | |
| 24 | 258-81-21560 | O-RING (K3) | 2001- |