| Item | Part No. | Part Name | Qty | Serial No. |
| \0 | 21D-64-10000 | SHOWEL CONTROL VALVE, ASSY. | 5006335- | |
| 1 | 21D-64-11100 | PRESSURE RELIEF VALVE | 5006335- | |
| 2 | 21D-64-11110 | KIT, GASKET | 5006335- | |
| 3 | 21D-64-11200 | UNION KIT | 5006335- | |
| 4 | 21D-64-11210 | JOINT | 5006335- | |
| 5 | 21D-09-69130 | O-RING | 5006335- | |
| 6 | 21D-64-11140 | ANTICAVITATIION VALVE | 5006335- | |
| 7 | 21D-64-11150 | PLUG | 5006335- | |
| 8 | 21D-64-11160 | FLANGE, ASSY. | 5006335- | |
| 9 | 21D-64-11300 | ANTICAVITATIION VALVE | 5006335- | |
| 10 | 21D-64-11310 | O-RING | 5006335- | |
| 11 | 21D-64-11170 | TIE-ROD | 5006335- | |
| 12 | 01643-31232 | WASHER | 5006335- | |
| 13 | 01580-11210 | NUT | 5006335- | |
| 14 | 21D-62-15790 | PRESSURE TAKE-UP | 5006335- | |
| 15 | 21D-09-86220 | GASKET | 5006335- | |
| 16 | 21D-62-15190 | PLUG (USED ONLY WITH 1-PIECE BOOM) | 5006335- | |
| 17 | 21D-09-69970 | O-RING | 5006335- |