| Item | Part No. | Part Name | Qty | Serial No. |
| \0 | 21D-01-10002 | ASPIRATED ENGINE | ||
| 1 | 6810-11-1100 | KIT, CYLINDER HEAD | ||
| 3 | 6810-21-1160 | PLUG | ||
| 4 | 6810-11-1110 | PLUG | ||
| 7 | 6810-41-4110 | VALVE, INLET | ||
| 8 | 6810-11-1120 | GUIDE | ||
| 9 | 6810-41-4120 | WASHER | ||
| 10 | \A\6810-41-4140 | SPRING | ||
| 11 | \A\6810-41-4150 | SPRING | ||
| 12 | 6810-41-4160 | SEAL, OIL | ||
| 13 | \A\6810-41-4180 | SEAT | ||
| 14 | 6810-41-4190 | PIN, PISTON | ||
| 16 | 6810-11-1130 | GUIDE | ||
| 17 | 6810-41-4120 | WASHER | ||
| 18 | \A\6810-41-4140 | SPRING | ||
| 19 | \A\6810-41-4150 | SPRING | ||
| 20 | 6810-41-4160 | SEAL, OIL | ||
| 21 | \A\6810-41-4180 | SEAT | ||
| 22 | 6810-41-4190 | PIN, PISTON | ||
| 23 | \3\6810-41-4130 | SPRING | ||
| 24 | \3\6810-41-4170 | SEAT | ||
| 25 | 6810-41-4210 | VALVE, EXHAUST | ||
| 26 | 6810-11-1140 | PLUG | ||
| 27 | 6810-11-1150 | PLUG | ||
| 28 | 6810-11-1160 | SCREW | ||
| 29 | 6810-11-1170 | SCREW | ||
| 30 | 6810-11-1180 | BOLT | ||
| 31 | 6810-11-1190 | GASKET | ||
| 32 | 6810-11-1220 | PLATE | ||
| 33 | 6810-71-6150 | SCREW | ||
| 34 | 6810-81-6140 | SCREW | ||
| 35 | 6810-11-1210 | PLATE | ||
| 36 | 6810-21-4180 | SCREW | ||
| 37 | 6810-11-1230 | PIN | ||
| 38 | 6810-11-3410 | SPACER | ||
| \A\ USED ONLY WITH DOUBLE SPRING HEAD ASSY. (HIGH SPEED APPLICATION) | ||||
| \3\ USED ONLY WITH SINGLE SPRING HEAD ASSY. (LOW SPEED APPLICATION) |