| Item | Part No. | Part Name | Qty | Serial No. |
| 1 | 423-876-HP99 | BY-PASS VALVE | -20839 | |
| 1A | 423-876-HP34 | BY-PASS VALVE | 20840-20986 | |
| 2 | 702-21-HP007 | PLUG | ||
| 3 | 709-90-HP055 | SCREW | ||
| 4 | 423-876-HP21 | O-RING | ||
| 5 | 423-876-HP22 | ORIFICE PLATE | ||
| 6 | 423-876-HP23 | PISTON | ||
| 7 | 709-90-HP057 | SPRING | ||
| 8 | 709-90-HP063 | PLUG | ||
| 9 | 423-876-HP21 | O-RING | ||
| 10 | 709-90-HP065 | SPRING | ||
| 11 | 709-90-HP064 | POPPET | ||
| 12 | 709-90-HP059 | VALVE HOUSING | ||
| 13 | 423-876-HP24 | O-RING | ||
| 14 | 709-90-HP061 | BACK-UP RING | ||
| 15 | 423-876-HP25 | O-RING | ||
| 16 | 709-90-HP070 | CAP NUT | ||
| 17 | 423-876-HP26 | SEAL | ||
| 18 | 709-90-HP072 | NUT | ||
| 19 | 709-90-HP073 | SCREW | ||
| 20 | 709-90-HP066 | CAP | ||
| 21 | 423-876-HP27 | O-RING | ||
| 22 | 709-90-HP067 | SPRING | ||
| 23 | 709-90-HP068 | POPPET | ||
| 24 | 709-90-HP074 | VALVE SEAT | ||
| 25 | 423-876-HP28 | O-RING | ||
| 26 | 423-876-HP29 | ORIFICE PLATE | ||
| 27 | 709-90-HP049 | SCREW | ||
| 28 | 423-876-HP30 | O-RING | ||
| 29 | 709-90-HP078 | PLUG | ||
| 30 | 421-64-H0P43 | SCREW | ||
| 31 | 423-876-HP32 | GASKET | ||
| 32 | 709-90-HP051 | NON-RETURN VALVE | ||
| 33 | 709-90-HP082 | POPPET | ||
| 34 | 709-90-HP083 | VALVE SEAT | ||
| 35 | 709-90-HP085 | PLATE | ||
| 36 | 709-90-HP088 | NUT | ||
| 37 | 709-90-HP086 | CIRCLIP | ||
| 38 | 709-90-HP084 | SPRING | ||
| 39 | 709-90-HP050 | O-RING | ||
| 40 | 709-90-HP087 | O-RING | ||
| 41 | 709-90-HP052 | SCREW |