| Item | Part No. | Part Name | Qty | Serial No. |
| 1 | (20K-63-31800) | CYLINDER ASS'Y,BOOM (SEE FIG.Y1620-01A1) | 20001- | |
| 2 | 20K-62-36240 | TUBE,L.H. | 20001- | |
| 20K-62-36250 | TUBE,R.H. | 20001- | ||
| 3 | 07000-13030 | O-RING | 20001- | |
| 4 | 07372-21060 | BOLT | 20001- | |
| 5 | 07372-21035 | BOLT | 20001- | |
| 6 | 01643-51032 | WASHER | 20001- | |
| 7 | 20K-62-35751 | TUBE,L.H. | 20001- | |
| 20K-62-35771 | TUBE,R.H. | 20001- | ||
| 8 | 07000-13030 | O-RING | 20001- | |
| 9 | 07372-21060 | BOLT | 20001- | |
| 10 | 07372-21045 | BOLT | 20001- | |
| 11 | 01643-51032 | WASHER | 20001- | |
| 12 | 20K-63-31440 | CLAMP,L.H. | 20001- | |
| 20K-63-31450 | CLAMP,R.H. | 20001- | ||
| 13 | 707-88-87330 | BAND | 20001- | |
| 14 | 01010-81035 | BOLT | 20001- | |
| 15 | 01643-51032 | WASHER | 20001- | |
| 16 | 07283-32738 | CLIP | 20001- | |
| 17 | 01599-01011 | NUT | 20001- | |
| 18 | 01643-31032 | WASHER | 20001- |