| Item | Part No. | Part Name | Qty | Serial No. |
| 600-821-5620 | ALTERNATOR A. (25A) | 10001- | ||
| THE NIKKO DENKI PART NUMBER IS THAT KD IS REMOVED FROM KOMATSU PART NUMBER LISTED BELOW. | ||||
| 1 | KD0-35100-0080 | ROTOR ASS'Y | 10001- | |
| 2 | KD1-09201-0460 | BEARING,BALL, REAR | 10001- | |
| 3 | KD1-0456-63057 | BEARING,BALL, FRONT | 10001- | |
| 4 | KD1-0416-04160 | KEY | 10001- | |
| 5 | KD1-33923-0780 | COLLAR | 10001- | |
| 6 | KD0-35926-0060 | RETAINER | 10001- | |
| 7 | KD1-33926-0750 | RETAINER | 10001- | |
| 8 | KD1-33926-0730 | RETAINER | 10001- | |
| 9 | KD1-33951-0610 | PACKING | 10001- | |
| 10 | KD1-33923-0810 | COLLAR | 10001- | |
| 11 | KD1-33926-0770 | RETAINER | 10001- | |
| 12 | KD1-35200-0060 | STATOR ASS'Y | 10001- | |
| 13 | KD0-35310-0021 | FRONT BRACKET ASS'Y | 10001- | |
| 14 | KD0-0275-06802 | BOLT | 10001- | |
| 15 | KD0-35411-0160 | PULLEY,NON HARDENING | 10001- | |
| 16 | KD1-35421-0030 | FAN | 10001- | |
| 17 | KD1-0330-16012 | WASHER | 10001- | |
| 18 | KD1-0335-16002 | WASHER,SPRING | 10001- | |
| 19 | KD0-0280-16022 | NUT | 10001- | |
| 20 | KD0-35120-0040 | FIELD COIL ASS'Y | 10001- | |
| KD0-35700-0130 | REAR BRACKET ASS'Y | 10001- | ||
| 21 | KD0-35710-0140 | BRACKET,REAR | 10001- | |
| 22 | KD0-35730-0080 | RECTIFIER ASS'Y | 10001- | |
| 23 | KD1-33943-0770 | BUSHING,INSULATE | 10001- | |
| 24 | KD1-09102-0010 | PLATE,INSULATE | 10001- | |
| 25 | KD1-33943-0760 | BUSHING,INSULATE | 10001- | |
| 26 | KD1-44000-0900 | REGULATOR | 10001- | |
| 27 | KD1-35761-0060 | COVER | 10001- |