| Item | Part No. | Part Name | Qty | Serial No. |
| 6144-11-1011 | CYLINDER HEAD A.,WITH VALVE | | 24550- |
| \0\6144-11-1010 | CYLINDER HEAD A.,WITH VALVE | | 15343-24549 |
| 6144-11-1101 | CYLINDER HEAD A.,VALVELESS | | 24550- |
| \0\6144-11-1100 | CYLINDER HEAD A.,VALVELESS | | 15343-24549 |
| 1 | \6\ | HEAD | | 24550- |
| \6\ | HEAD | | 15343-24549 |
| 2 | 6142-12-1140 | PIPE | | 24550- |
| 6140-11-1140 | PIPE | | 15343-24549 |
| 3 | 07046-41410 | PLUG | | 24550- |
| 6140-11-1150 | PLUG | | 15343-24549 |
| 4 | 07046-42516 | PLUG | | 24550- |
| 6140-11-1160 | PLUG | | 15343-24549 |
| 5 | 6142-19-1310 | GUIDE | | 15343- |
| 6 | 6142-12-1430 | SEAT,INTAKE (STD) | | 15343- |
| 6142-19-1430 | SEAT¤ 0.25MM,INTAKE (OS) | | 15343- |
| 6142-18-1430 | SEAT¤ 0.50MM,INTAKE (OS) | | 15343- |
| 7 | 6142-12-1440 | SEAT,EXHAUST (STD) | | 15343- |
| 6142-19-1440 | SEAT¤ 0.25MM,EXHAUST (OS) | | 15343- |
| 6142-18-1440 | SEAT¤ 0.50MM,EXHAUST (OS) | | 15343- |
| 8 | 6142-11-8120 | STUD | | 15343- |
| 9 | 6140-41-4111 | VALVE | | 15343- |
| 10 | 6142-42-4210 | VALVE | | 15343- |
| 11 | 6140-41-4410 | SPRING | | 15343- |
| 12 | 6140-41-4511 | SEAT | | 15343- |
| 13 | 6140-41-4520 | COTTER | | 15343- |
| 14 | 6140-41-4530 | ROTATOR | | 15343- |
| 15 | 6140-41-4540 | SEAL (K1) | | 15343- |
| 16 | 6144-11-1810 | GASKET (K1) | | 15343- |
| 17 | 6142-11-1611 | BOLT | | 52642- |
| \0\6142-11-1610 | BOLT | | 15343-52641 |
| 18 | 6144-11-1910 | HANGER | | 15343- |
| 19 | 01010-30816 | BOLT | | 15343- |
| 20 | 01602-00825 | WASHER | | 15343- |
| 21 | 6144-11-1920 | HANGER | | 18535- |
| 22 | 01010-31220 | BOLT | | 18535- |
| 23 | 01602-01236 | WASHER | | 18535- |
| 24 | 01010-31240 | BOLT | | 15343-18534 |
| 25 | 6142-12-2130 | INSERT | | 24550- |
| 6142-12-2120 | INSERT | | 15343-24549 |
