| Item | Part No. | Part Name | Qty | Serial No. |
| 23D-43-13111 | CYLINDER ASS'Y,BOOSTER AND MASTER | 4028- | ||
| 23A-43-13510 | CYLINDER ASS'Y,BOOSTER | 4028- | ||
| 1 | 23A-43-13220 | BODY | 4001- | |
| 2 | 238-43-19350 | SEAL (K11) | 4001- | |
| 3 | 238-43-19340 | O-RING (K11) | 4001- | |
| 4 | 23A-43-13250 | CYLINDER | 4001- | |
| 5 | 23A-43-13230 | PISTON | 4001- | |
| 6 | 232-843-1410 | CAP | 4001- | |
| 7 | 232-843-1421 | RING,BACK-UP (K11) | 4001- | |
| 8 | 232-843-1480 | O-RING (K11) | 4001- | |
| 9 | 232-843-1320 | SPRING | 4001- | |
| 10 | 23A-43-13260 | RING,SNAP | 4001- | |
| 11 | 23A-43-13240 | PISTON,BOOSTER | 4001- | |
| 12 | 238-43-19330 | O-RING (K11) | 4001- | |
| 13 | 23A-43-13270 | SPRING | 4001- | |
| 14 | 23A-43-13310 | STOPPER | 4001- | |
| 15 | 238-43-19320 | O-RING (K11) | 4001- | |
| 16 | 04065-09030 | RING,SNAP | 4001- | |
| 17 | 23A-43-13320 | ROD | 4001- | |
| 18 | 238-43-19310 | BOOT (K11) | 4001- | |
| 19 | 232-843-1270 | SEAT | 4001- | |
| 20 | 23A-43-13470 | SPRING | 4028- | |
| 21 | 23A-43-13280 | BOLT | 4001- | |
| 22 | 238-43-19360 | GASKET (K11) | 4001- | |
| 23 | 232-843-1430 | FILTER ASS'Y,AIR | 4001- | |
| 23A-43-13520 | CYLINDER ASS'Y,MASTER | 4028- | ||
| 24 | 23A-43-13480 | CYLINDER | 4028- | |
| 25 | 232-843-1680 | SEAT,VALVE | 4001- | |
| 26 | 23A-43-13380 | CHECK VALVE ASS'Y | 4001- | |
| 27 | 23A-43-13550 | SPRING | 4028- | |
| 28 | 23A-43-13370 | RETAINER | 4001- | |
| 29 | 23A-43-13360 | CAP | 4001- | |
| 23A-43-13450 | PISTON ASS'Y | 4001- | ||
| 30 | 23A-43-13340 | PISTON | 4001- | |
| 31 | 23A-43-13350 | CAP | 4001- | |
| 32 | 23A-43-13260 | RING,SNAP | 4028- | |
| 33 | 23A-43-13490 | CAP | 4028- | |
| 34 | 07280-04126 | CLAMP | 4028- | |
| 35 | 232-843-1720 | PLUG | 4001- | |
| 36 | 01010-51035 | BOLT | 4028- | |
| 37 | 01601-21030 | WASHER,SPRING | 4028- |