| Item | Part No. | Part Name | Qty | Serial No. |
| 23E-60-11101 | PUMP ASS'Y | 4028- | ||
| 23E-60-11100 | PUMP ASS'Y | 4001-4027 | ||
| THE KAYABA KOGYO PART NUMBER IS THAT KB IS REMOVED FROM KOMATSU PART NUMBER LISTED BELOW. | ||||
| 1 | KB20121-30705 | FLANGE | 4001- | |
| 2 | \6\ | BODY,FRONT | 4028- | |
| \6\ | BODY,FRONT | 4001-4027 | ||
| 3 | KB20121-40105 | PLATE,CENTER | 4001- | |
| 4 | \6\ | BODY,REAR | 4001- | |
| 5 | KB20121-30101 | COVER | 4001- | |
| 6 | \6\ | GEAR,DRIVE¤ FRONT (K12) | 4001- | |
| 7 | \6\ | GEAR,DRIVEN¤ FRONT (K12) | 4001- | |
| 8 | \6\ | BUSHING (K12) | 4001- | |
| 9 | \6\ | BUSHING (K12) | 4001- | |
| 10 | \6\ | PACKING,RING (K14) | 4001- | |
| 11 | \6\ | PACKING,RING (K14) | 4001- | |
| 12 | \6\ | GEAR,DRIVE¤ REAR (K13) | 4001- | |
| 13 | \6\ | GEAR,DRIVEN¤ REAR (K13) | 4001- | |
| 14 | \6\ | BUSHING (K13) | 4001- | |
| 15 | \6\ | BUSHING (K13) | 4001- | |
| 16 | \6\ | PACKING,RING (K14) | 4001- | |
| 17 | \6\ | PACKING,RING (K14) | 4001- | |
| 18 | \6\ | SEAL (K14) | 4001- | |
| 19 | \6\ | SEAL (K14) | 4001- | |
| 20 | KB20121-41802 | COUPLING | 4001- | |
| 21 | KB20121-41225 | BOLT | 4001- | |
| 22 | KB94101-10250 | WASHER,SPRING | 4001- | |
| 23 | \6\ | SEAL,OIL (K14) | 4001- | |
| 24 | \6\ | RING,SNAP (K14) | 4001- |