| Item | Part No. | Part Name | Qty | Serial No. |
| 600-821-6130 | ALTERNATOR A. (25A) | 20910- | ||
| THE NIKKO DENKI PART NUMBER IS THAT KD IS REMOVED FROM KOMATSU PART NUMBER LISTED BELOW. | ||||
| 1 | KD1-09201-0530 | BEARING,BALL, REAR | 20910- | |
| 2 | KD1-33926-0820 | RETAINER | 20910- | |
| 3 | KD0-33100-1450 | ROTOR ASS'Y | 20910- | |
| 4 | KD1-0416-04160 | KEY | 20910- | |
| 5 | KD0-33923-0980 | COLLAR | 20910- | |
| 6 | KD1-0055-06162 | SCREW | 20910- | |
| 7 | KD0-35926-0060 | RETAINER | 20910- | |
| 8 | KD1-33926-0750 | RETAINER | 20910- | |
| 9 | KD1-0456-63057 | BEARING,BALL, FRONT | 20910- | |
| 10 | KD1-33926-0730 | RETAINER | 20910- | |
| 11 | KD1-33923-0920 | COLLAR | 20910- | |
| KD0-33700-2711 | REAR BRACKET ASS'Y | 20910- | ||
| 12 | KD0-33902-0080 | NUT | 20910- | |
| 13 | KD0-33902-0090 | NUT | 20910- | |
| 14 | KD1-33943-0980 | BUSHING,INSULATE | 20910- | |
| 15 | KD0-33943-1050 | BUSHING,INSULATE | 20910- | |
| 16 | KD0-33710-3300 | REAR BRACKET ASS'Y | 20910- | |
| 17 | KD0-33730-2560 | RECTIFIER ASS'Y | 20910- | |
| 18 | KD1-33740-0450 | BRUSH | 20910- | |
| 19 | KD0-0274-05102 | BOLT | 20910- | |
| 20 | KD0-0275-06802 | BOLT | 20910- | |
| 21 | KD0-33200-1410 | STATOR ASS'Y | 20910- | |
| 22 | KD0-33311-0510 | BRACKET,FRONT | 20910- | |
| 23 | KD1-33421-0590 | FAN | 20910- | |
| 24 | KD0-33411-2850 | PULLEY,NON HARDENING | 20910- | |
| 25 | KD0-0280-16022 | NUT | 20910- | |
| 26 | KD1-33951-0610 | PACKING,(NOT SHOWN) | 20910- |