| Item | Part No. | Part Name | Qty | Serial No. |
| 723-48-21201 | VALVE ASSEMBLY | H55051- | ||
| THESE ASSEMBLIES CONSIST OF ALL PARTS SHOWN IN FIGS.Y1664-21A0 TO Y1664-40A0 | ||||
| 723-46-17701 | PLUG ASSEMBLY | H55051- | ||
| 1 | 723-46-17711 | PLUG | H55051- | |
| 2 | 07000-11009 | O-RING | H55051- | |
| 3 | 07001-01009 | RING | H55051- | |
| 4 | 07000-11007 | O-RING | H55051- | |
| 5 | 07001-01007 | RING | H55051- | |
| 6 | 723-11-29361 | PLUG | H55051- | |
| 7 | 07000-13024 | O-RING | H55051- | |
| 8 | 700-22-11410 | O-RING | H55051- | |
| 9 | 700-80-64220 | RING | H55051- |