| Item | Part No. | Part Name | Qty | Serial No. |
| 23F-60-12300 | CONTROL VALVE ASS'Y | 12001- | ||
| THE KAYABA KOGYO PART NUMBER IS THAT KB IS REMOVED FROM KOMATSU PART NUMBER LISTED BELOW. | ||||
| KB21013-35188 | SPOOL SECTION ASS'Y | 12001- | ||
| 1 | \6\ | HOUSING | 12001- | |
| 2 | \6\ | O-RING (K21) | 12001- | |
| 3 | \6\ | WIPER (K21) | 12001- | |
| 4 | \6\ | SPOOL | 12001- | |
| 5 | KB21011-30613 | SPRING | 12001- | |
| 6 | KB21011-30702 | SEAT,SPRING | 12001- | |
| 7 | KB21011-30507 | SCREW | 12001- | |
| 8 | KB21011-31011 | CAP | 12001- | |
| 9 | KB21011-31702 | PLATE | 12001- | |
| 10 | KB92702-06181 | BOLT | 12001- | |
| 11 | KB21011-31702 | PLATE | 12001- | |
| 12 | KB91111-60102 | SCREW | 12001- | |
| 13 | KB21011-32404 | POPPET | 12001- | |
| 14 | KB21011-30606 | SPRING | 12001- | |
| 15 | \6\ | O-RING (K21) | 12001- | |
| 16 | KB21011-30104 | SECTION ASS'Y | 12001- | |
| 17 | KB21013-36022 | INLET SECTION ASS'Y | 12001- | |
| 18 | \6\ | O-RING (K21) | 12001- | |
| KB21003-00207 | PLUG ASS'Y | 12001- | ||
| 19 | KB21001-00504 | PLUG | 12001- | |
| 20 | \6\ | O-RING | 12001- | |
| KB21003-00300 | PLUG ASS'Y | 12001- | ||
| 21 | KB21001-90408 | PLUG | 12001- | |
| 22 | \6\ | O-RING | 12001- | |
| 23 | KB21041-30104 | STUD | 12001- | |
| 24 | KB93118-08652 | NUT | 12001- | |
| 25 | KB21041-30103 | STUD | 12001- | |
| 26 | KB93128-10082 | NUT | 12001- |