| Item | Part No. | Part Name | Qty | Serial No. |
| 600-821-5451 | ALTERNATOR A. (25A) | 10001-20909 | ||
| THE NIKKO DENKI PART NUMBER IS THAT KD IS REMOVED FROM KOMATSU PART NUMBER LISTED BELOW. | ||||
| 1 | KD7-33100-0130 | ROTOR ASS'Y | 10001-20909 | |
| 2 | KD1-0462-62027 | BEARING,BALL, REAR | 10001-20909 | |
| 3 | KD1-33926-0380 | RETAINER | 10001-20909 | |
| 4 | KD1-33923-0570 | COLLAR | 10001-20909 | |
| 5 | KD0-33926-0370 | RETAINER | 10001-20909 | |
| 6 | KD1-0462-63057 | BEARING,BALL, FRONT | 10001-20909 | |
| 7 | KD1-44000-0580 | REGULATOR ASS'Y | 10001-20909 | |
| KD0-33700-1970 | REAR BRACKET ASS'Y | 10001-20909 | ||
| 8 | KD1-09102-0010 | PLATE,INSULATE | 10001-20909 | |
| 9 | KD1-33944-0490 | TUBE,B-TERMINAL | 10001-20909 | |
| 10 | KD1-33720-0792 | BRUSH HOLDER ASS'Y | 10001-20909 | |
| 11 | KD0-33901-0500 | BOLT,B-TERMINAL | 10001-20909 | |
| 12 | KD1-33944-0540 | TUBE,INSULATE, R-TERMINAL | 10001-20909 | |
| 13 | KD0-33710-1661 | REAR BRACKET A. | 10001-20909 | |
| 14 | KD0-33730-1600 | RECTIFIER ASS'Y | 10001-20909 | |
| 15 | KD1-33943-0870 | BUSHING,INSULATE | 10001-20909 | |
| 16 | KD0-33901-0370 | BOLT,R-TERMINAL | 10001-20909 | |
| 17 | KD0-0080-05102 | BOLT,E-TERMINAL | 10001-20909 | |
| 18 | KD0-0275-06852 | BOLT | 10001-20909 | |
| 19 | KD1-33200-0990 | STATOR ASS'Y | 10001-20909 | |
| 20 | KD1-33310-0682 | FRONT BRACKET ASS'Y | 10001-20909 | |
| 21 | KD0-33400-1670 | PULLEY ASS'Y,NON HARDENING | 10001-20909 | |
| 22 | KD0-0280-18022 | NUT | 10001-20909 | |
| 23 | KD1-0335-18022 | WASHER,SPRING | 10001-20909 | |
| 24 | KD0-0055-05282 | SCREW | 10001-20909 |