Komatsu S6D155-4B Cylinder Block Parts Hub
Komatsu S6D155-4B Cylinder Block Parts is a focused 19PARTS hub for buyers working inside a specific Komatsu engine model and repair system. It is meant to reduce guesswork by tying engine-model navigation to related product listings and part-number references.
Diagram callout lookup for Komatsu S6D155-4B Cylinder Block Parts
Use each diagram together with the table directly below it. The Diagram Ref. column corresponds to the location number shown on that specific image. Clickable part numbers link to matching 19PARTS product pages where a product match exists.
S6D155-4B — Flywheel¤ Power Take Off And Flywheel Housing
| Diagram Ref. | Part Number | Description | Qty | Serial / Option Notes |
|---|---|---|---|---|
| 4 | 01010-31030 | Bolt | 12 | SN: 10016-26893 |
| 5 | 6127-31-1330 | Washer (K2) | 12 | SN: 10016-23893 |
| 8 | 6127-31-1350 | Lock (K2) | 3 | SN: 10016-UP |
| 10 | 6127-11-1620 | Washer | 6 | SN: 26698-UP |
| 16 | 04020-01434 | Pin | 4 | SN: 10016-UP |
| 18 | 01010-31245 | Bolt | 2 | SN: 12453-UP |
| 19 | 01582-01210 | Nut | 4 | SN: 10016-12452 |
| 20 | 01602-01236 | Washer | 2 | SN: 12453-UP |
| 20 | 01602-01236 | Washer | 4 | SN: 10016-12452 |
| 22 | 07000-05165 | O-Ring (K2) | 1 | SN: 10016-UP |
| 24 | 01010-31030 | Bolt | 6 | SN: 10016-UP |
| 25 | 01602-01030 | Washer | 6 | SN: 10016-UP |
| 26 | 01641-21016 | Washer | 1 | SN: 10016-UP |
| 30 | 07000-05150 | O-Ring (K2) | 1 | SN: 10016-UP |
| 32 | 01530-06214 | Nut | 1 | SN: 10016-UP |
| 33 | 01658-26223 | Washer (K2) | 1 | SN: 10016-UP |
| 34 | 06000-06214 | Bearing | 1 | SN: 10016-UP |
| 38 | 01010-31230 | Bolt | 6 | SN: 10016-UP |
| 39 | 01602-01236 | Washer | 6 | SN: 10016-UP |
| 40 | 6128-21-4321 | Gear | 1 | SN: 10016-UP |
| 41 | 06002-30217 | Bearing | 2 | SN: 13846-UP |
| 43 | 6128-21-4340 | Retainer | 1 | SN: 10016-UP |
| 45 | 6128-21-4360 | Lock (K2) | 1 | SN: 10016-UP |
| 47 | 07000-03095 | O-Ring (K2) | 1 | SN: 10016-UP |
| 48 | 07000-03110 | O-Ring (K2) | 1 | SN: 10016-UP |
| 49 | 06000-06010 | Bearing | 2 | SN: 10016-UP |
| 51 | 6128-21-4540 | Collar | 1 | SN: 10016-UP |
| 52 | 6128-21-4510 | Shaft | 1 | SN: 10016-UP |
| 54 | 01010-31020 | Bolt | 6 | SN: 10016-UP |
| 55 | 6127-21-4550 | Lock (K2) | 3 | SN: 10016-UP |
| 58 | 6128-21-4600 | Shim Ass'Y | 1 | SN: 10016-UP |
| 58 | 6128-21-4610 | Shim, 1.0Mm | 1 | SN: 10016-UP |
| 58 | 6128-21-4620 | Shim, 0.5Mm | 1 | SN: 10016-UP |
| 58 | 6128-21-4630 | Shim, 0.1Mm | 2 | SN: 10016-UP |
| 59 | 6127-21-4813 | Gasket (K2) | 1 | SN: 10278-UP |
| 60 | 01010-31845 | Bolt | 4 | SN: 10278-UP |
| 61 | 01010-31855 | Bolt | 7 | SN: 10278-UP |
| 61 | 01010-31870 | Bolt | 3 | SN: 10278-UP |
| 62 | 01602-01854 | Washer | 14 | SN: 10016-16057 |
| 62 | 01643-31845 | Washer | 14 | SN: 16058-UP |
| 63 | 6128-21-4230 | Seal, Rear (K2) | 1 | SN: 15953-UP |
| 65 | 07000-65220 | O-Ring (K2) | 1 | SN: 13462-UP |
| 66 | 01010-31025 | Bolt | 8 | SN: 10016-UP |
| 67 | 6127-21-4240 | Lock (K2) | 2 | SN: 10016-29842 |
| 69 | 6127-21-4260 | Lock (K2) | 1 | SN: 10016-29842 |
| 72 | 01010-61845 | Bolt | 8 | SN: 10278-UP |
| 73 | 6643-21-4731 | Plate (K2) | 4 | SN: 10016-UP |
| 66A | 01602-01030 | Washer | 8 | SN: 29843-UP |
S6D155-4B — Cylinder Block(#20000-)
| Diagram Ref. | Part Number | Description | Qty | Serial / Option Notes |
|---|---|---|---|---|
| 2 | 07046-15020 | Plug | 1 | SN: 20000-UP |
| 4 | 04020-01842 | Pin | 2 | SN: 20000-UP |
| 5 | 04020-00820 | Pin | 2 | SN: 20000-UP |
| 10 | 07040-11409 | Plug | 1 | SN: 20000-UP |
| 11 | 07005-01412 | Gasket (K2) | 1 | SN: 20000-UP |
| 12 | 04020-01024 | Pin | 6 | SN: 20000-UP |
| 22 | 04020-00616 | Pin | 2 | SN: 20000-UP |
| 24 | 6127-21-1741 | Washer | 14 | SN: 20000-UP |
| 26 | 01010-31230 | Bolt | 4 | SN: 20000-UP |
| 27 | 01650-21212 | Washer (K2) | 4 | SN: 20000-UP |
| 30 | 01643-31032 | Washer | 1 | SN: 25996-UP |
| 32 | 01010-31035 | Bolt | 3 | SN: 20000-UP |
| 33 | 01650-21012 | Washer (K2) | 3 | SN: 20000-UP |
| 36 | 6127-21-2431 | Lock (K2) | 1 | SN: 20000-UP |
| 39 | 07000-62016 | O-Ring (K2) | 1 | SN: 20000-UP |
| 40 | 01010-30818 | Bolt | 6 | SN: 20000-UP |
| 41 | 01602-00825 | Washer | 6 | SN: 20000-UP |
| 44 | The part specified in the line above can be used instead of this part6610-21-5671 | Gasket (K2) | 1 | SN: 20000-48680 |
| 45 | 01010-31025 | Bolt | 4 | SN: 20000-UP |
| 47 | 01602-01030 | Washer | 4 | SN: 20000-UP |
| 51 | 6127-51-6920 | Gasket (K2) | 1 | SN: 20000-UP |
| 52 | 01010-31020 | Bolt | 2 | SN: 20000-UP |
| 54 | 6127-21-2252 | Seal (K2) | 6 | SN: 51233-UP |
| 55 | 6127-21-2221 | O-Ring (K2) | 6 | SN: 20000-UP |
| 56 | 6127-21-2241 | O-Ring (K2) | 6 | SN: 20000-UP |
| 59 | 07217-51013 | Elbow | 1 | SN: 20000-UP |
| 61 | 6127-21-7401 | Cap | 1 | SN: 20000-UP |
| 63 | 6127-21-6521 | Gasket (K2) | 1 | SN: 28424-UP |
| 63 | 6127-21-6521 | Gasket (K2) | 2 | SN: 20000-28423 |
| 64 | 01010-30845 | Bolt | 1 | SN: 28398-UP |
| 65 | 01602-00825 | Washer | 8 | SN: 28424-UP |
| 65 | 01602-00825 | Washer | 16 | SN: 20000-28397 |
| 66 | 01010-31016 | Bolt | 1 | SN: 20000-UP |
| 67 | 01602-01030 | Washer | 1 | SN: 20000-UP |
| 75 | 01641-21626 | Washer | 1 | SN: 22645-UP |
| 76 | 01582-01613 | Nut | 1 | SN: 20000-UP |
| 77 | 01602-01648 | Washer | 1 | SN: 20000-UP |
| 78 | 01010-31230 | Bolt | 1 | SN: 22645-UP |
| 78 | 01010-31235 | Bolt | 4 | SN: 20000-22644 |
| 78 | 01010-31240 | Bolt | 1 | SN: 22645-UP |
| 79 | 01602-01236 | Washer | 4 | SN: 20000-22644 |
| 79 | 01640-01223 | Washer | 1 | SN: 22645-UP |
| 79 | 01643-31232 | Washer | 1 | SN: 22645-UP |
| 58A | 07005-01412 | Gasket (K2) | 1 | SN: 20000-UP |
| 61A | 6128-21-7450 | Ring | 1 | SN: 20000-UP |
S6D155-4B — Cylinder Block(#10016-19999)
| Diagram Ref. | Part Number | Description | Qty | Serial / Option Notes |
|---|---|---|---|---|
| 2 | 07046-15020 | Plug | 1 | SN: 10866-@ |
| 2 | 07046-15020 | Plug | 2 | SN: 10278-10865 |
| 2 | 07046-15020 | Plug | 6 | SN: 10016-10277 |
| 3 | 07043-00415 | Plug | 2 | SN: 10016-@ |
| 4 | 04020-01842 | Pin | 2 | SN: 10016-@ |
| 4 | 04020-01842 | Pin | 1 | SN: 10016-14952 |
| 5 | 04020-00820 | Pin | 2 | SN: 14953-@ |
| 9 | 07043-01019 | Plug | 1 | SN: 10016-@ |
| 11 | 07040-01409 | Plug | 1 | SN: 10016-10277 |
| 11 | 07040-11409 | Plug | 1 | SN: 10278-@ |
| 12 | 07003-01419 | Gasket (K2) | 1 | SN: 10016-19999 |
| 13 | 04020-01024 | Pin | 6 | SN: 10016-@ |
| 19 | 07043-01019 | Plug | 1 | SN: 10016-@ |
| 24 | 04020-00616 | Pin | 2 | SN: 10016-@ |
| 26 | 6127-21-1741 | Washer | 14 | SN: 15946-@ |
| 28 | 01010-31230 | Bolt | 4 | SN: 10016-@ |
| 29 | 01650-21212 | Washer (K2) | 4 | SN: 10016-@ |
| 34 | 01010-31035 | Bolt | 3 | SN: 10016-@ |
| 35 | 01650-21012 | Washer (K2) | 3 | SN: 10016-@ |
| 38 | 6127-21-2431 | Lock (K2) | 1 | SN: 10016-@ |
| 40 | 07000-02016 | O-Ring (K1) | 1 | SN: 10016-11774 |
| 40 | 07000-62016 | O-Ring (K1) | 1 | SN: 11775-@ |
| 41 | 01010-30818 | Bolt | 6 | SN: 10278-@ |
| 42 | 01602-00825 | Washer | 6 | SN: 10016-@ |
| 45 | 01010-31025 | Bolt | 4 | SN: 10016-19999 |
| 46 | 01602-01030 | Washer | 4 | SN: 10016-19999 |
| 48 | 6127-21-2221 | O-Ring (K2) | 6 | SN: 10016-12297 |
| 49 | 6127-21-2221 | O-Ring (K2) | 6 | SN: 10016-@ |
| 50 | 6127-21-2241 | O-Ring (K2) | 6 | SN: 10016-@ |
| 54 | 6127-21-7401 | Cap | 1 | SN: 14538-@ |
| 56 | 6127-21-6521 | Gasket (K2) | 2 | SN: 10016-@ |
| 58 | 01602-00825 | Washer | 16 | SN: 10016-@ |
| 59 | 01010-31020 | Bolt | 1 | SN: 14281-19999 |
| 60 | 01602-01030 | Washer | 1 | SN: 14281-19999 |
| 68 | 01582-01613 | Nut | 1 | SN: 10278-@ |
| 69 | 01602-01648 | Washer | 1 | SN: 10016-@ |
| 71 | 01010-31235 | Bolt | 4 | SN: 10016-@ |
| 72 | 01602-01236 | Washer | 4 | SN: 10016-@ |
| 54A | 6128-21-7450 | Ring | 1 | SN: 14538-@ |
S6D155-4B — Gear Case And Front Support
| Diagram Ref. | Part Number | Description | Qty | Serial / Option Notes |
|---|---|---|---|---|
| 2 | 04020-01434 | Pin | 1 | SN: 10016-UP |
| 3 | 04020-01434 | Pin | 1 | SN: 14953-UP |
| 4 | 04020-00616 | Pin | 2 | SN: 10016-UP |
| 9 | 01582-01008 | Nut | 6 | SN: 10016-UP |
| 10 | 01602-01030 | Washer | 6 | SN: 10016-UP |
| 11 | 6127-21-3160 | Grommet (K2) | 2 | SN: 10016-UP |
| 12 | 6128-21-3810 | Gasket (K2) | 1 | SN: 15092-UP |
| 13 | 01010-31650 | Bolt | 15 | SN: 11692-UP |
| 13 | 01010-31650 | Bolt | 14 | SN: 10278-11691 |
| 14 | 01602-01648 | Washer | 15 | SN: 11604-UP |
| 14 | 01602-01648 | Washer | 14 | SN: 10016-11603 |
| 18 | 04020-00820 | Pin | 1 | SN: 10016-UP |
| 24 | 6127-31-6221 | Bushing | 1 | SN: 10016-UP |
| 25 | 6127-31-6261 | Metal | 1 | SN: 10016-UP |
| 26 | 6128-21-3230 | Gasket (K2) | 1 | SN: 14953-UP |
| 27 | 01010-31475 | Bolt | 9 | SN: 24805-UP |
| 27 | 01010-31475 | Bolt | 12 | SN: 10278-10415 |
| 27 | 01010-31475 | Bolt | 12 | SN: 10016-10277 |
| 28 | 01010-31455 | Bolt | 4 | SN: 10278-UP |
| 29 | 01010-31480 | Bolt | 1 | SN: 24805-UP |
| 29 | 01010-31480 | Bolt | 2 | SN: 10416-21775 |
| 29 | 01010-31480 | Bolt | 1 | SN: 10278-10415 |
| 30 | 01602-01442 | Washer | 17 | SN: 10016-UP |
| 31 | 01641-21423 | Washer | 2 | SN: 10016-UP |
| 32 | 01011-31625 | Bolt | 2 | SN: 10278-UP |
| 33 | 01602-01648 | Washer | 2 | SN: 10016-UP |
| 35 | 6124-21-3240 | Gasket (K2) | 1 | SN: 10016-28423 |
| 36 | 01010-31065 | Bolt | 8 | SN: 10016-10034 |
| 37 | 01602-01030 | Washer | 8 | SN: 10016-28423 |
| 39 | 01010-30612 | Bolt | 2 | SN: 10016-UP |
| 42 | 01010-31440 | Bolt | 2 | SN: 28366-UP |
| 42 | 01010-31440 | Bolt | 4 | SN: 10016-28365 |
| 43 | 01602-01442 | Washer | 2 | SN: 28366-UP |
| 43 | 01602-01442 | Washer | 4 | SN: 10016-28365 |
| 44 | 6127-21-3510 | Seal, Front (K2) | 1 | SN: 14953-UP |
| 47 | 07000-03035 | O-Ring (K2) | 1 | SN: 10866-14063 |
| 48 | 01010-31025 | Bolt | 1 | SN: 10866-14063 |
| 49 | 01602-01030 | Washer | 1 | SN: 10866-14063 |
| 29A | 01580-01411 | Nut | 1 | SN: 21776-UP |
| 40A | 01642-20608 | Washer | 2 | SN: 13039-UP |
S6D155-4B — Alternator Drive(#24805-)
| Diagram Ref. | Part Number | Description | Qty | Serial / Option Notes |
|---|---|---|---|---|
| 2 | 07042-20108 | Plug | 1 | SN: 25682-29842 |
| 2 | 07042-20108 | Plug | 2 | SN: 24805-25681 |
| 4 | 06000-06206 | Bearing | 1 | SN: 24805-UP |
| 5 | 04065-06220 | Ring | 1 | SN: 24805-UP |
| 9 | 04010-00519 | Key | 1 | SN: 24805-UP |
| 10 | 01602-01854 | Washer | 1 | SN: 24805-UP |
| 11 | 01583-01811 | Nut | 1 | SN: 24805-UP |
| 12 | 06000-06307 | Bearing | 1 | SN: 24805-UP |
| 14 | 07000-02075 | O-Ring (K2) | 1 | SN: 24805-UP |
| 15 | 01010-30616 | Bolt | 6 | SN: 29843-UP |
| 16 | 01602-00619 | Washer | 6 | SN: 24805-UP |
| 18 | 07000-03025 | O-Ring (K2) | 1 | SN: 24805-UP |
| 19 | 6128-21-6820 | Seal (K2) | 1 | SN: 30281-UP |
| 21 | 04000-00518 | Key | 1 | SN: 24805-UP |
| 24 | 07000-02140 | O-Ring (K2) | 1 | SN: 24805-UP |
| 25 | 01010-31240 | Bolt | 3 | SN: 24805-UP |
| 26 | 01602-01236 | Washer | 3 | SN: 24805-UP |
S6D155-4B — Alternator Drive (For 50A Alternator)
| Diagram Ref. | Part Number | Description | Qty | Serial / Option Notes |
|---|---|---|---|---|
| 2 | 07042-20108 | Plug | 1 | SN: 10016-29842 |
| 4 | 06000-06206 | Bearing | 1 | SN: 10016-UP |
| 5 | 04065-06220 | Ring | 1 | SN: 10016-UP |
| 9 | 04010-00519 | Key | 1 | SN: 10016-UP |
| 10 | 01602-01854 | Washer | 1 | SN: 10016-UP |
| 11 | 01583-01811 | Nut | 1 | SN: 10016-UP |
| 12 | 06000-06307 | Bearing | 1 | SN: 10016-UP |
| 14 | 07000-02075 | O-Ring (K2) | 1 | SN: 10016-UP |
| 15 | 01010-30616 | Bolt | 6 | SN: 29843-UP |
| 16 | 01602-00619 | Washer | 6 | SN: 10016-UP |
| 18 | 07000-03025 | O-Ring (K2) | 1 | SN: 10016-UP |
| 19 | 6128-21-6820 | Seal (K2) | 1 | SN: 30281-UP |
| 21 | 04000-00518 | Key | 1 | SN: 10016-UP |
| 24 | 07000-02140 | O-Ring (K2) | 1 | SN: 10016-UP |
| 25 | 01010-31240 | Bolt | 3 | SN: 10016-UP |
| 26 | 01602-01236 | Washer | 3 | SN: 10016-UP |
Shop the Komatsu S6D155-4B Cylinder Block Parts collection
S6D155-4B Cylinder Block Parts lookup notes
Use this hub when the repair has already been narrowed to cylinder block parts. Confirm each part against the engine serial range, parts-book callout, quantity, and option notes before ordering.
Related parent hubs
Featured parts in this hub
- Komatsu Engine Ball Bearing 06000-06214 — SKU KOM-06000-06214 | Ball Bearing
- Komatsu Engine Ball Bearing 06000-06307 — SKU KOM-06000-06307 | Ball Bearing
- Komatsu Engine Bearing Ball 06000-06010 — SKU KOM-06000-06010 | Bearing Ball
- Komatsu Engine Bearing Ball 06000-06206 — SKU KOM-06000-06206 | Bearing Ball
- Komatsu Engine Bearing Roller 06002-30217 — SKU KOM-06002-30217 | Bearing Roller
- Komatsu Engine Bolt 01010-30818 — SKU KOM-01010-30818 | Bolt
- Komatsu Engine Bolt 01010-30845 — SKU KOM-01010-30845 | Bolt
- Komatsu Engine Bolt 01010-31455 — SKU KOM-01010-31455 | Bolt
- Komatsu Engine Bolt 01010-31475 — SKU KOM-01010-31475 | Bolt
- Komatsu Engine Bolt 01010-31480 — SKU KOM-01010-31480 | Bolt
- Komatsu Engine Bolt 01010-31845 — SKU KOM-01010-31845 | Bolt
- Komatsu Engine Bolt 01010-31855 — SKU KOM-01010-31855 | Bolt
- Komatsu Engine Bolt 01010-31870 — SKU KOM-01010-31870 | Bolt
- Komatsu Engine Bolt 01010-61845 — SKU KOM-01010-61845 | Bolt
- Komatsu Engine Bolt 01011-31625 — SKU KOM-01011-31625 | Bolt
- Komatsu Engine Cap Oil Filler 6127-21-7401 — SKU KOM-6127-21-7401 | Cap Oil Filler
- Komatsu Engine Collar 6128-21-4540 — SKU KOM-6128-21-4540 | Collar
- Komatsu Engine Elbow Turbocharger Oil Inlet 07217-51013 — SKU KOM-07217-51013 | Elbow Turbocharger Oil Inlet
- Komatsu Engine Gasket 6124-21-3240 — SKU KOM-6124-21-3240 | Gasket
- Komatsu Engine Gasket 6127-21-5161 — SKU KOM-6127-21-5161 | Gasket
- Komatsu Engine Gasket 6127-21-5550 — SKU KOM-6127-21-5550 | Gasket
- Komatsu Engine Gasket 6127-21-5811 — SKU KOM-6127-21-5811 | Gasket
- Komatsu Engine Gasket 6127-21-5850 — SKU KOM-6127-21-5850 | Product code 6127-21-5811 | Gasket
- Komatsu Engine Gasket 6128-21-3230 — SKU KOM-6128-21-3230 | Gasket
- Komatsu Engine Gasket 6128-21-3810 — SKU KOM-6128-21-3810 | Gasket
- Komatsu Engine Gasket Cover 6127-51-6920 — SKU KOM-6127-51-6920 | Gasket Cover
- Komatsu Engine Gasket Flywheel Housing 6127-21-4813 — SKU KOM-6127-21-4813 | Gasket Flywheel Housing
- Komatsu Engine Gasket Oil Filter 6127-21-6521 — SKU KOM-6127-21-6521 | Gasket Oil Filter
- Komatsu Engine Grommet 6127-21-3160 — SKU KOM-6127-21-3160 | Grommet
- Komatsu Engine Idler Gear 6128-21-4321 — SKU KOM-6128-21-4321 | Idler Gear
This hub includes 74 linked product listings. Use the collection link above to browse the full set.
Parts-book verification before ordering
Komatsu engine parts often change by engine arrangement, serial range, diagram callout, and option note. 19PARTS uses engine-model organization to help you move from a broad Komatsu part number search into a tighter reference path, but final fitment should always be confirmed against your engine serial number and parts book.
Our Keep Ops Moving approach is simple: give buyers cleaner lookup paths, clear part-number references, and practical cross-navigation so rebuild shops, fleet teams, mechanics, and equipment owners can identify the right components faster.