| Item | Part No. | Part Name | Qty | Serial No. |
| 6138-11-8300 | HEAD COVER ASS'Y | 50001-53688 | ||
| 1 | 6136-11-8150 | COVER,HEAD | 50001-53688 | |
| 6138-11-8401 | BREATHER ASS'Y | 50001-53688 | ||
| 2 | 6138-11-8412 | BODY | 50001-53688 | |
| 3 | 6138-11-8431 | ELEMENT | 50001-53688 | |
| 4 | 6138-11-8420 | COVER | 50001-53688 | |
| 5 | 6620-21-7530 | GASKET (K1) | 50001-53688 | |
| 6 | 600-181-6510 | SEAL | 50001-53688 | |
| 7 | 6138-11-8450 | NUT,WING | 50001-53688 | |
| 8 | 6136-11-8812 | O-RING (K1) | 50001-53688 | |
| 9 | 6136-11-8120 | NUT | 50001-53688 | |
| 10 | 6136-11-8130 | WASHER | 50001-@ | |
| 11 | 6136-11-8142 | PACKING (K1) | 50001-@ | |
| 12 | 6138-11-8850 | HOSE | 50001-@ | |
| 13 | 07280-02523 | CLAMP | 50001-@ | |
| 14 | 6600-01-5950 | CLIP | 50001-@ |