| Item | Part No. | Part Name | Qty | Serial No. |
| (363-N39-4250) | VALVE ASS'Y | 19001- | ||
| THIS ASSEMBLY CONSISTS OF ALL PARTS SHOWN IN FIGS.Y1683-01A0 AND Y1683-02A0. | ||||
| THE KAYABA KOGYO PART NUMBER IS THAT KB IS REMOVED FROM KOMATSU PART NUMBER LISTED BELOW. | ||||
| 363-64-33150 | SPOOL SECTION ASS'Y | 19001- | ||
| 1 | \6\ | HOUSING | 19001- | |
| 2 | KB21011-32404 | POPPET | 19001- | |
| 3 | KB21011-30604 | SPRING | 19001- | |
| 4 | KB21001-00106 | O-RING | 19001- | |
| 5 | \6\ | SPOOL | 19001- | |
| 6 | KB21001-00689 | O-RING | 19001- | |
| 7 | KB21011-32801 | WIPER | 19001- | |
| 8 | KB21011-31702 | PLATE | 19001- | |
| 9 | KB91111-60102 | SCREW | 19001- | |
| 10 | KB21011-30904 | SPACER | 19001- | |
| 11 | KB95131-01400 | O-RING | 19001- | |
| 12 | KB21001-00689 | O-RING | 19001- | |
| 13 | KB21011-30702 | SEAT,SPRING | 19001- | |
| 14 | KB21011-30603 | SPRING | 19001- | |
| 15 | KB21011-30510 | PIN | 19001- | |
| 16 | KB21011-30609 | SPRING | 19001- | |
| 17 | KB21011-33002 | BALL | 19001- | |
| 18 | KB21011-33003 | BALL | 19001- | |
| 19 | KB21011-31804 | SLEEVE | 19001- | |
| 20 | KB21011-31013 | CAP | 19001- | |
| 21 | KB92703-06321 | BOLT,HEAD | 19001- | |
| 22 | KB21011-33403 | SPACER | 19001- | |
| 23 | KB21011-33501 | RING,SNAP | 19001- | |
| 24 | 42A-855-1350 | OUTLET SECTION ASS'Y | 19001- | |
| 25 | 363-64-33230 | STUD,TIE | 19001- | |
| 26 | 42A-64-13120 | NUT | 19001- | |
| 27 | 363-64-33240 | STUD,TIE | 19001- | |
| 28 | 42A-64-13140 | NUT | 19001- | |
| 29 | 42A-64-13240 | VALVE ASS'Y,ANTI-VOID | 19001- | |
| 30 | KB21001-00036 | O-RING | 19001- | |
| 31 | 42A-64-13250 | PLUG,(FOR SHIPPING) | 19001- |