| Item | Part No. | Part Name | Qty | Serial No. |
| G1 | (\8\21Y-63-X2102) | CYLINDER GROUP,BOOM¤ L.H. | | 1371- |
| (\8\21Y-63-X2101) | CYLINDER GROUP,BOOM¤ L.H. | | 1001-1370 |
| G2 | (\8\21Y-63-X2112) | CYLINDER GROUP,BOOM¤ R.H. | | 1371- |
| (\8\21Y-63-X2111) | CYLINDER GROUP,BOOM¤ R.H. | | 1001-1370 |
| | ==================== | | |
| 21Y-63-02101 | CYLINDER ASS'Y,BOOM | | 1001- |
| 1 | 21Y-63-52141 | CYLINDER | | 1001- |
| 2 | 707-76-70230 | BUSHING | | 1001- |
| 3 | 07145-00070 | SEAL,DUST (KIT) | | 1001- |
| 4 | 07020-00000 | FITTING,GREASE | | 1001- |
| 5 | 707-27-10670 | HEAD,CYLINDER | | 1001- |
| 6 | 707-52-90450 | BUSHING | | 1001- |
| 7 | 707-51-70030 | PACKING,ROD (KIT) | | 1001- |
| 8 | 707-51-70630 | RING,BUFFER (KIT) | | 1001- |
| 9 | 07000-15100 | O-RING (KIT) | | 1001- |
| 10 | 07001-05100 | RING,BACK-UP (KIT) | | 1001- |
| 11 | 144-63-95170 | SEAL,DUST (KIT) | | 1001- |
| 12 | 07179-12084 | RING,SNAP | | 1001- |
| 13 | 707-88-83130 | BRACKET | | 1001- |
| 14 | 01010-81465 | BOLT | | 1001- |
| 15 | 705-17-04980 | WASHER | | 1001- |
| 16 | 21Y-63-52121 | ROD | | 1001- |
| 17 | 707-76-70230 | BUSHING | | 1001- |
| 18 | 07145-00070 | SEAL,DUST (KIT) | | 1001- |
| 19 | 707-36-10510 | PISTON | | 1001- |
| 20 | 707-44-10280 | RING,PISTON (KIT) | | 1001- |
| 21 | 707-39-10520 | RING,WEAR (KIT) | | 1001- |
| 22 | 707-44-10911 | RING | | 1001- |
| 23 | 07165-15252 | NUT,NYLON | | 1001- |
| 24 | 21Y-63-52172 | TUBE,L.H. | | 1371- |
| 21Y-63-52171 | TUBE,L.H. | | 1001-1370 |
| 21Y-63-52272 | TUBE,R.H. | | 1371- |
| 21Y-63-52271 | TUBE,R.H. | | 1001-1370 |
| 25 | 21Y-63-52182 | TUBE,L.H. | | 1371- |
| 21Y-63-52181 | TUBE,L.H. | | 1001-1370 |
| 21Y-63-52282 | TUBE,R.H. | | 1371- |
| 21Y-63-52281 | TUBE,R.H. | | 1001-1370 |
| 26 | 07000-13025 | O-RING (KIT) | | 1001- |
| 27 | 01010-50850 | BOLT | | 1001- |
| 28 | 01643-50823 | WASHER | | 1001- |
| 29 | 707-88-96971 | BAND | | 1001- |
| 30 | 21Y-63-52192 | BRACKET | | 1371- |
| 21Y-63-52191 | BRACKET | | 1001-1370 |
| 31 | 01010-51035 | BOLT | | 1001- |
| 32 | 01643-51032 | WASHER | | 1001- |
| 33 | 01010-51030 | BOLT | | 1371- |
| 01010-51025 | BOLT | | 1001-1370 |
| 34 | 01643-31032 | WASHER | | 1001- |
| | ==================== | | |
