| Item | Part No. | Part Name | Qty | Serial No. |
| 23E-60-12300 | CONTROL VALVE ASS'Y | 6001-6500 | ||
| THE KAYABA KOGYO PART NUMBER IS THAT KB IS REMOVED FROM KOMATSU PART NUMBER LISTED BELOW. | ||||
| KB21013-21426 | SPOOL SECTION ASS'Y | 6001-6500 | ||
| 1 | \6\ | HOUSING | 6001-6500 | |
| 2 | \6\ | O-RING | 6001-6500 | |
| 3 | \6\ | WIPER | 6001-6500 | |
| 4 | \6\ | SPOOL | 6001-6500 | |
| 5 | KB21011-22457 | SPRING | 6001-6500 | |
| 6 | KB21011-21251 | SEAT,SPRING | 6001-6500 | |
| 7 | KB21011-22351 | SCREW,CAP | 6001-6500 | |
| 8 | KB21011-21851 | CAP | 6001-6500 | |
| 9 | KB21011-21151 | PLATE | 6001-6500 | |
| 10 | KB92702-05121 | BOLT | 6001-6500 | |
| 11 | KB21011-22251 | HEAD,SPOOL | 6001-6500 | |
| 12 | KB21011-31507 | LINK | 6001-6500 | |
| 13 | KB21011-33307 | PIN | 6001-6500 | |
| 14 | KB94311-05082 | WASHER | 6001-6500 | |
| 15 | KB93601-12082 | PIN,COTTER | 6001-6500 | |
| 16 | KB21011-21951 | BRACKET | 6001-6500 | |
| 17 | KB21011-21152 | SEAL | 6001-6500 | |
| 18 | KB92702-05121 | BOLT | 6001-6500 | |
| 19 | KB21011-21052 | VALVE | 6001-6500 | |
| 20 | KB21011-22452 | SPRING | 6001-6500 | |
| 21 | \6\ | O-RING | 6001-6500 | |
| KB21013-20169 | INLET SECTION ASS'Y | 6001-6500 | ||
| 22 | KB21011-20163 | HOUSING | 6001-6500 | |
| 23 | \6\ | O-RING | 6001-6500 | |
| KB21003-00207 | PLUG ASS'Y | 6001-6500 | ||
| 24 | KB21001-00504 | PLUG | 6001-6500 | |
| 25 | \6\ | O-RING | 6001-6500 | |
| 26 | KB21013-30664 | RELIEF VALVE ASS'Y | 6001-6500 | |
| 27 | KB21011-20361 | OUTLET SECTION | 6001-6500 | |
| 28 | KB21031-30104 | STUD | 6001-6500 | |
| 29 | KB93328-08652 | NUT | 6001-6500 |