| Item | Part No. | Part Name | Qty | Serial No. |
| \0 | 723-21-02500 | 2-PIECE BOOM ELEMENT, ASSY. | 21D5220114- | |
| 1 | \6\ | BLOCK, 2-PIECE BOOM | 21D5220114- | |
| 2 | \6\ | SPOOL, 2-PIECE BOOM | 21D5220114- | |
| 3 | \6\ | O-RING | 21D5220114- | |
| 4 | \6\ | PLUG | 21D5220114- | |
| 5 | 723-26-15120 | SPRING GUIDE | 21D5220114- | |
| 6 | 709-26-11450 | SPRING | 21D5220114- | |
| 7 | 575-41-17420 | O-RING | 21D5220114- | |
| 8 | 723-26-15110 | COVER | 21D5220114- | |
| 9 | 01252-60630 | SCREW | 21D5220114- | |
| 10 | 01641-20608 | WASHER | 21D5220114- | |
| 11 | 723-26-15230 | PLUG | 21D5220114- | |
| 12 | 07002-12434 | O-RING | 21D5220114- | |
| 13 | 723-26-14140 | SPRING | 21D5220114- | |
| 14 | 723-26-51150 | PISTON | 21D5220114- | |
| 15 | \6\ | VALVE | 21D5220114- | |
| 16 | \6\ | VALVE | 21D5220114- | |
| 17 | \6\ | SLEEVE | 21D5220114- | |
| 18 | \6\ | SPRING | 21D5220114- | |
| 19 | \6\ | GASKET | 21D5220114- | |
| 20 | \6\ | VALVE | 21D5220114- | |
| 21 | 07002-02034 | O-RING | 21D5220114- | |
| 22 | 723-26-15220 | PLUG | 21D5220114- | |
| 23 | 07002-11223 | O-RING | 21D5220114- | |
| 24 | 723-26-14150 | SPRING | 21D5220114- | |
| 25 | \6\ | VALVE | 21D5220114- | |
| 26 | 07000-02120 | O-RING | 21D5220114- | |
| 27 | 07000-12010 | O-RING | 21D5220114- | |
| 28 | 07000-12020 | O-RING | 21D5220114- | |
| 29 | 07000-13035 | O-RING | 21D5220114- | |
| 30 | 723-26-15710 | STUD | 21D5220114- | |
| 31 | 01580-11008 | NUT | 21D5220114- | |
| 32 | 01643-31032 | WASHER | 21D5220114- | |
| SEE FIG. 6200 |