| Item | Part No. | Part Name | Qty | Serial No. |
| 6610-10-1001 | CYLINDER HEAD ASS'Y | .- | ||
| \0\6610-10-1000 | CYLINDER HEAD ASS'Y | 23020-. | ||
| 6610-10-1101 | CYLINDER HEAD ASS'Y | .- | ||
| \0\6610-10-1100 | CYLINDER HEAD ASS'Y | 23020-. | ||
| 1 | \6\ | HEAD,CYLINDER | 23020- | |
| 2 | 6610-11-1311 | GUIDE,VALVE | .- | |
| 2 | \0\6610-11-1310 | GUIDE,VALVE | 23020-. | |
| 3 | 6610-11-1140 | GUIDE,CROSSHEAD | 23020- | |
| 4 | 6610-11-1220 | INSERT (STD) | .- | |
| 4 | \0\6610-11-1120 | INSERT (STD) | 23020-. | |
| 4 | 6610-19-1220 | INSERT, 0.13MM (OS) | .- | |
| 4 | \0\6610-19-1120 | INSERT, 0.13MM (OS) | 23020-. | |
| 4 | 6610-18-1220 | INSERT, 0.25MM (OS) | .- | |
| 4 | \0\6610-18-1120 | INSERT, 0.25MM (OS) | 23020-. | |
| 4 | 6610-17-1220 | INSERT, 0.50MM (OS) | .- | |
| 4 | \0\6610-17-1120 | INSERT, 0.50MM (OS) | 23020-. | |
| 4 | 6610-16-1220 | INSERT, 0.75MM (OS) | .- | |
| 4 | \0\6610-16-1120 | INSERT, 0.75MM (OS) | 23020-. | |
| 4 | 6610-15-1220 | INSERT, 1.00MM (OS) | .- | |
| 4 | \0\6610-15-1120 | INSERT, 1.00MM (OS) | 23020-. | |
| 5 | 6610-11-1130 | SLEEVE,INJECTOR | 23020- | |
| 6 | 02720-11616 | PLUG | 23020- | |
| 7 | 6610-11-1460 | PLUG | 23020- | |
| 8 | 6610-11-1470 | PLUG | 23020- | |
| 9 | 6610-11-1420 | PIN,DOWEL | 23020- | |
| 10 | 6610-41-4210 | VALVE,EXHAUST | 23020- | |
| 11 | 6610-41-4110 | VALVE,INTAKE | 23020- | |
| 12 | 6610-41-4410 | SPRING,VALVE | 23020- | |
| 13 | 6610-41-4510 | GUIDE,VALVE SPRING | 23020- | |
| 14 | 6600-01-3910 | COLLET,HALF, VALVE | 23020- | |
| 15 | 6610-41-5610 | CROSSHEAD,ADJUSTING | 23020- | |
| 16 | 6610-41-5620 | SCREW | 23020- | |
| 17 | 6600-01-2520 | NUT | 23020- | |
| 18 | 6610-21-2610 | PIPE,OIL | 23020- | |
| 19 | 6610-11-1711 | GASKET (K2) | .- | |
| 19 | 6610-11-1710 | GASKET (K2) | 23020-. | |
| 6610-11-1080 | GASKET ASS'Y,CYLINDER HEAD (K2) | 23020- | ||
| 20 | \6\ | GASKET (K2) | 23020- | |
| 21 | 6610-11-1840 | GROMMET (K2) | 23020- | |
| 22 | 6610-11-1830 | RING (K2) | 23020- | |
| 23 | 6610-11-1820 | GROMMET (K2) | 23020- | |
| 24 | 6610-11-1850 | RETAINER (K2) | 23020- |