| Item | Part No. | Part Name | Qty | Serial No. |
| 6631-21-1003 | CYLINDER BLOCK A. | | 26818- |
| 6631-21-1002 | CYLINDER BLOCK A. | | 23490-26817 |
| \0\6631-21-1001 | CYLINDER BLOCK A. | | 18566-23489 |
| 6631-21-1023 | CYLINDER BLOCK A. | | 26818- |
| \0\6631-21-1022 | CYLINDER BLOCK A. | | 23490-26817 |
| \0\6631-21-1021 | CYLINDER BLOCK A. | | 18566-23489 |
| 1 | \6\ | BLOCK,CYLINDER | | 23490- |
| 1 | \6\ | BLOCK,CYLINDER | | 18566-23489 |
| 1 | \6\ | BLOCK,CYLINDER | | 18566-18548 |
| 6610-21-1040 | BUSHING ASS'Y,CAMSHAFT | | 18566- |
| 2 | 6610-21-1410 | BUSHING,FRONT | | 18566- |
| 3 | 6610-21-1420 | BUSHING | | 18566- |
| 4 | 6610-11-1611 | BOLT,CYLINDER HEAD | | 18566- |
| 5 | 6610-11-1620 | WASHER | | 18566- |
| 6 | 6610-21-1210 | CAP,MAIN METAL, NO.1,3,5 | | 18566- |
| 6 | \5\6610-29-1210 | CAP,MAIN METAL, NO.1,3,5 | | 18566- |
| 6 | 6610-21-1220 | CAP,MAIN METAL, NO.2,4,6 | | 18566- |
| 6 | \5\6610-29-1220 | CAP,MAIN METAL, NO.2,4,6 | | 18566- |
| 6 | 6610-21-1231 | CAP,MAIN METAL, REAR | | 26818- |
| 6 | 6610-21-1230 | CAP,MAIN METAL, REAR | | 18566-26817 |
| 6 | \5\6610-29-1231 | CAP,MAIN METAL, REAR | | 26818- |
| 6 | \5\6610-29-1230 | CAP,MAIN METAL, REAR | | 18566-26817 |
| 7 | 6610-21-1710 | BOLT,MAIN METAL CAP | | 18566- |
| 8 | 6610-21-1720 | WASHER,LOCK | | 18566- |
| 9 | 6610-21-6710 | COVER,WATER HEADER | | 18566- |
| 10 | 6610-21-6720 | GASKET (K4) | | 18566- |
| 11 | 02010-20419 | BOLT | | 18566- |
| 12 | 02310-10916 | WASHER,SPRING | | 18566- |
| 13 | 02400-20416 | PIN,DOWEL | | 18566- |
| 14 | 6610-21-1270 | PIN,DOWEL, MAIN METAL CAP | | 18566- |
| 14 | 6610-29-1270 | PIN,DOWEL, MAIN METAL CAP (OS) | | 18566- |
| 15 | 6610-11-1410 | PIN,DOWEL, CYLINDER HEAD | | 18566- |
| 16 | 6610-21-4570 | PIN,DOWEL, FLYWHEEL HOUSING | | 18566- |
| 17 | 6620-21-3610 | PIN,DOWEL, GEAR CASE COVER | | 18566- |
| 18 | 6620-21-3620 | PIN,DOWEL, GEAR CASE COVER | | 18566- |
| 20 | 02720-20608 | PLUG,WATER HEADER | | 18566- |
| 21 | 02720-20607 | PLUG,DRAIN, WATER | | 23990- |
| 21 | \0\6600-01-2820 | PLUG,DRAIN, WATER | | 18566-23989 |
| 22 | 02720-20809 | PLUG | | 21194- |
| 22 | 02720-20809 | PLUG | | 18566-21193 |
| 22A | 02701-11208 | ELBOW,BYPASS FILTER | | .- |
| 22A | \0\6631-51-9951 | ELBOW,BYPASS FILTER | | 26818-. |
| 22A | 6631-51-9950 | ELBOW,BYPASS FILTER | | 21194-26817 |
| 23 | 6710-21-1260 | PLUG,WATER HEADER | | .- |
| 23 | \0\6600-01-2890 | PLUG,WATER HEADER | | 18566-. |
| 24 | 6610-21-2720 | PLUG,OIL HEADER | | 18566- |
| 25 | 02720-10607 | PLUG | | .- |
| 25 | \0\6600-01-2860 | PLUG | | 18566-. |
| 26 | 02720-21214 | PLUG | | 18566- |
| 27 | 02720-21214 | PLUG | | 18566- |
| 28 | 02720-20204 | PLUG | | 18566- |
| 28A | 6610-21-2770 | PIN,STOPPER | | 18566- |
| 29 | 02010-20416 | BOLT,WATER BYPASS | | 18566-. |
| 30 | 02206-10404 | NUT | | 18566-. |
| 31 | 6610-21-2730 | PLUG,WATER BYPASS | | 18566-. |
| 32 | 02892-03031 | O-RING (K4) | | 18566-. |
| 33 | 6610-81-8820 | ELBOW,PRESSURE GAUGE | | 18566- |
| 34 | 6620-81-1117 | PLATE, NAME,(LIMITED SUPPLY) | | .- |
| 34 | \0\6620-81-1116 | PLATE, NAME,(LIMITED SUPPLY) | | 18566-. |
| 34 | 6620-81-1123 | PLATE, NAME,(EXCEPT JAPAN) | | .- |
| 34 | 6620-81-1122 | PLATE, NAME,(EXCEPT JAPAN) | | 18566-. |
| 35 | 04418-02550 | SCREW | | 18566- |
| 36 | 02720-20809 | PLUG | | 18566- |
| 37 | 6610-21-1730 | RING,DOWEL | | 18566- |
| 38 | 6610-21-2212 | LINER,CYLINDER | | 18566- |
| 39 | 6610-21-2240 | SEAL,CREVICE, CYLINDER LINER (K4) | | 18566- |
| 39A | 6610-21-2221 | O-RING (K4) | | 18566- |
| 39B | 6610-21-2250 | O-RING (K4) | | 18566- |
| 40 | 6610-21-6730 | FLANGE,OIL HEADER | | 18566- |
| 41 | 6610-21-5670 | GASKET (K4) | | 18566- |
| 42 | 02030-20625 | BOLT | | 18566- |
| 43 | 02310-11224 | WASHER,SPRING | | 18566- |
| 44 | 6643-21-6760 | COVER,HAND HOLE | | 18566- |
| 45 | 6623-21-6770 | GASKET (K4) | | 18566- |
| 46 | 02010-20625 | BOLT | | 18566- |
| 47 | 02310-11224 | WASHER,SPRING | | 18566- |
| 49 | 6610-21-2790 | PIN,DOWEL | | 18566- |
| 51 | 6610-29-2230 | SHIM, 0.18MM,CYLINDER LINER | | 18566- |
| 51 | 6610-28-2230 | SHIM, 0.20MM,CYLINDER LINER | | 18566- |
| 51 | 6610-27-2230 | SHIM, 0.23MM,CYLINDER LINER | | 18566- |
| 51 | 6610-26-2230 | SHIM, 0.51MM,CYLINDER LINER | | 18566- |
| 51 | 6610-25-2230 | SHIM, 0.79MM,CYLINDER LINER | | 18566- |
| 51 | 6610-24-2230 | SHIM, 1.57MM,CYLINDER LINER | | 18566- |
