| Item | Part No. | Part Name | Qty | Serial No. |
| 23A-60-11202 | PUMP ASS'Y | 4525-4731 | ||
| 23A-60-11201 | PUMP ASS'Y | 4047-4524 | ||
| 23A-60-11200 | PUMP ASS'Y | 4001-4046 | ||
| THE KAYABA KOGYO PART NUMBER IS THAT KB IS REMOVED FROM KOMATSU PART NUMBER LISTED BELOW. | ||||
| 1 | KB20121-60705 | FLANGE | 4001-4731 | |
| 2 | \6\ | BODY | 4047-4731 | |
| \6\ | BODY | 4001-4046 | ||
| 3 | KB20121-60101 | COVER | 4001-4731 | |
| 4 | \6\ | GEAR,DRIVE (KIT A) | 4001-4731 | |
| 5 | \6\ | GEAR,DRIVEN (KIT A) | 4001-4731 | |
| 6 | \6\ | BUSHING (KIT A) | 4001-4731 | |
| 7 | \6\ | BUSHING (KIT A) | 4001-4731 | |
| 8 | \6\ | PACKING,RING (KIT B) | 4001-4731 | |
| 9 | \6\ | PACKING,RING (KIT B) | 4001-4731 | |
| 10 | \6\ | SEAL (KIT B) | 4001-4731 | |
| 11 | \6\ | O-RING (KIT B) | 4001-4731 | |
| 12 | \6\ | SEAL,OIL (KIT B) | 4001-4731 | |
| 13 | \6\ | RING,SNAP (KIT B) | 4001-4731 | |
| 14 | KB20121-61241 | BOLT | 4001-4731 | |
| 15 | KB94101-10250 | WASHER,SPRING | 4001-4731 | |
| SERVICE KIT | ||||
| KIT A | KB2012B-60009 | SERVICE KIT,GEAR | 4001-4731 | |
| KIT B | KB2012A-60004 | SERVICE KIT,SEAL | 4001-4731 |