Komatsu Engine Engine Overhaul Kits
Komatsu Engine Engine Overhaul Kits brings together Komatsu engine listings by major repair system. This helps buyers who know the engine area they are working in but still need to confirm the exact part number, product code, diagram context, or related engine model.
Diagram callout lookup for Komatsu Engine Engine Overhaul Kits
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.
S6D155-4-R — Gasket Kit(#56577-)
| Diagram Ref. | Part Number | Description | Qty | Serial / Option Notes |
|---|---|---|---|---|
| 1 | 02895-67091 | O-Ring | 4 | SN: 56577-UP |
| 1 | 02895-67116 | O-Ring | 12 | SN: 56577-UP |
| 1 | 07000-02016 | O-Ring | 12 | SN: 56577-UP |
| 1 | 07000-03022 | O-Ring | 6 | SN: 56577-UP |
| 1 | 07000-03075 | O-Ring | 2 | SN: 56577-UP |
| 1 | 07000-05055 | O-Ring | 2 | SN: 56577-UP |
| 1 | 07000-05065 | O-Ring | 1 | SN: 56577-UP |
| 1 | 07000-05075 | O-Ring | 1 | SN: 56577-UP |
| 1 | 07000-23038 | O-Ring | 1 | SN: 56577-UP |
| 1 | 07000-62020 | O-Ring | 1 | SN: 56577-UP |
| 1 | 07000-72070 | O-Ring | 1 | SN: 58937-UP |
| 1 | 07000-73032 | O-Ring | 1 | SN: 58937-UP |
| 1 | 07000-73035 | O-Ring | 1 | SN: 58937-UP |
| 1 | 07003-01015 | Gasket | 4 | SN: 56577-UP |
| 1 | 07003-01419 | Gasket | 1 | SN: 56577-UP |
| 1 | 07003-01824 | Gasket | 4 | SN: 56577-UP |
| 1 | 07005-00812 | Gasket | 40 | SN: 56577-UP |
| 1 | 07005-01412 | Gasket | 10 | SN: 56577-UP |
| 1 | 07005-01612 | Gasket | 5 | SN: 56577-UP |
| 1 | 07005-02416 | Gasket | 3 | SN: 56577-UP |
| 1 | 08034-00414 | Band | 3 | SN: 56577-UP |
| 1 | 08034-00519 | Band | 3 | SN: 56577-UP |
| 1 | 600-815-2190 | Gasket | 2 | SN: 56577-UP |
| 1 | 6112-11-4570 | O-Ring | 2 | SN: 56577-UP |
| 1 | 6127-11-1087 | Gasket Ass'Y | 3 | SN: 56577-UP |
| 1 | 6127-11-4621 | Gasket | 1 | SN: 56577-UP |
| 1 | 6127-11-4641 | Gasket | 2 | SN: 56577-UP |
| 1 | 6127-11-4822 | Gasket | 3 | SN: 56577-UP |
| 1 | 6127-11-5190 | Lock | 6 | SN: 56577-UP |
| 1 | 6127-11-5480 | Shim, 0.1Mm | 2 | SN: 56577-UP |
| 1 | 6127-11-5490 | Shim, 0.3Mm | 3 | SN: 56577-UP |
| 1 | 6127-11-5810 | Gasket | 6 | SN: 56577-UP |
| 1 | 6127-11-6431 | Gasket | 1 | SN: 56577-UP |
| 1 | 6127-11-6471 | Gasket | 1 | SN: 56577-UP |
| 1 | 6127-11-7813 | Gasket | 3 | SN: 56577-UP |
| 1 | 6127-11-8240 | Gasket | 1 | SN: 56577-UP |
| 1 | 6127-11-8812 | Gasket | 3 | SN: 56577-UP |
| 1 | 6127-41-4541 | Seal | 12 | SN: 56577-UP |
| 1 | 6127-51-6822 | Gasket | 1 | SN: 56577-UP |
| 1 | 6127-81-2810 | Gasket | 1 | SN: 56577-UP |
| 1 | 6127-81-4823 | Gasket | 1 | SN: 56577-UP |
| 1 | 6128-11-4721 | Gasket | 2 | SN: 56577-UP |
| 1 | 6128-11-4731 | Gasket | 1 | SN: 56577-58936 |
| 1 | 6128-11-5481 | Gasket | 1 | SN: 56577-UP |
| 1 | 6128-11-5611 | Gasket | 2 | SN: 56577-UP |
| 1 | 6128-11-6812 | Gasket | 6 | SN: 56577-UP |
| 1 | 6128-51-8152 | Gasket | 2 | SN: 56577-UP |
| 1 | 6128-61-6831 | Gasket | 3 | SN: 56577-UP |
| 1 | 6128-61-6841 | Gasket | 1 | SN: 56577-UP |
| 1 | 6128-81-2810 | Gasket | 1 | SN: 56577-UP |
| 1 | 6128-81-4621 | Gasket | 1 | SN: 56577-UP |
| 1 | 6128-K1-9901 | Gasket Kit,Cylinder Head | 1 | SN: 57335-UP |
| 1 | 6610-81-4150 | Gasket | 1 | SN: 56577-UP |
| 1 | 6610-81-4240 | O-Ring | 1 | SN: 56577-UP |
| 1 | 69902-0-3270 | Gasket | 1 | SN: 56577-UP |
| 1 | The part specified in the line above can be used instead of this part07000-62070 | O-Ring | 1 | SN: 56577-58936 |
| 1 | The part specified in the line above can be used instead of this part07000-63035 | O-Ring | 1 | SN: 56577-58936 |
| 1 | The part specified in the line above can be used instead of this part6128-K1-9900 | Gasket Kit,Cylinder Head | 1 | SN: 56577-57334 |
| 2 | 01650-21212 | Washer | 4 | SN: 56577-UP |
| 2 | 01653-20808 | Washer | 1 | SN: 56577-UP |
| 2 | 01653-21412 | Washer | 1 | SN: 56577-UP |
| 2 | 01653-22016 | Washer | 1 | SN: 56577-UP |
| 2 | 01653-23318 | Washer | 1 | SN: 56577-UP |
| 2 | 01658-23923 | Washer | 1 | SN: 56577-UP |
| 2 | 02894-07201 | O-Ring | 1 | SN: 56577-UP |
| 2 | 04081-04512 | Lock | 1 | SN: 56577-UP |
| 2 | 06122-04004 | Seal | 2 | SN: 56577-UP |
| 2 | 06122-04504 | Seal | 2 | SN: 56577-UP |
| 2 | 07000-02015 | O-Ring | 1 | SN: 56577-UP |
| 2 | 07000-02018 | O-Ring | 1 | SN: 56577-UP |
| 2 | 07000-02065 | O-Ring | 1 | SN: 56577-UP |
| 2 | 07000-02075 | O-Ring | 1 | SN: 56577-UP |
| 2 | 07000-02090 | O-Ring | 1 | SN: 56577-UP |
| 2 | 07000-02140 | O-Ring | 1 | SN: 56577-UP |
| 2 | 07000-03025 | O-Ring | 1 | SN: 56577-UP |
| 2 | 07000-03032 | O-Ring | 2 | SN: 56577-UP |
| 2 | 07000-03035 | O-Ring | 1 | SN: 56577-UP |
| 2 | 07000-03045 | O-Ring | 1 | SN: 56577-UP |
| 2 | 07000-03115 | O-Ring | 1 | SN: 56577-UP |
| 2 | 07000-03135 | O-Ring | 1 | SN: 56577-UP |
| 2 | 07000-05110 | O-Ring | 1 | SN: 56577-UP |
| 2 | 07000-05135 | O-Ring | 1 | SN: 56577-UP |
| 2 | 07000-05140 | O-Ring | 1 | SN: 56577-UP |
| 2 | 07000-05165 | O-Ring | 1 | SN: 56577-UP |
| 2 | 07000-05185 | O-Ring | 1 | SN: 56577-UP |
| 2 | 07000-23022 | O-Ring | 2 | SN: 56577-UP |
| 2 | 07000-23038 | O-Ring | 1 | SN: 56577-UP |
| 2 | 07000-62015 | O-Ring | 1 | SN: 56577-UP |
| 2 | 07000-63030 | O-Ring | 1 | SN: 56577-UP |
| 2 | 07000-63032 | O-Ring | 1 | SN: 56577-UP |
| 2 | 07000-63035 | O-Ring | 1 | SN: 56577-UP |
| 2 | 07000-65055 | O-Ring | 2 | SN: 56577-UP |
| 2 | 07000-65220 | O-Ring | 1 | SN: 56577-UP |
| 2 | 07000-72016 | O-Ring | 6 | SN: 58937-UP |
| 2 | 07000-73028 | O-Ring | 1 | SN: 58937-UP |
| 2 | 07003-01419 | Gasket | 1 | SN: 56577-UP |
| 2 | 07003-02733 | Gasket | 1 | SN: 56577-UP |
| 2 | 07005-00812 | Gasket | 5 | SN: 56577-UP |
| 2 | 07005-01012 | Gasket | 4 | SN: 56577-UP |
| 2 | 07005-01212 | Seal | 6 | SN: 56577-UP |
| 2 | 07005-01412 | Gasket | 1 | SN: 56577-UP |
| 2 | 07005-01412 | Gasket | 6 | SN: 56577-UP |
| 2 | 07005-01612 | Gasket | 1 | SN: 56577-UP |
| 2 | 08034-00414 | Band | 3 | SN: 56577-UP |
| 2 | 08034-00519 | Band | 4 | SN: 56577-UP |
| 2 | 6120-51-5180 | Gasket | 3 | SN: 56577-UP |
| 2 | 6120-61-6851 | Gasket | 1 | SN: 56577-UP |
| 2 | 6124-21-3241 | Gasket | 1 | SN: 56577-UP |
| 2 | 6124-61-2181 | Grommet | 2 | SN: 56577-UP |
| 2 | 6124-61-3741 | Gasket | 1 | SN: 56577-UP |
| 2 | 6124-61-3790 | Lock | 2 | SN: 56577-UP |
| 2 | 6127-11-1620 | Washer | 6 | SN: 56577-UP |
| 2 | 6127-21-2221 | O-Ring | 6 | SN: 56577-UP |
| 2 | 6127-21-2241 | O-Ring | 6 | SN: 56577-UP |
| 2 | 6127-21-2252 | Seal | 6 | SN: 56577-UP |
| 2 | 6127-21-2431 | Lock | 1 | SN: 56577-UP |
| 2 | 6127-21-3160 | Grommet | 2 | SN: 56577-UP |
| 2 | 6127-21-3510 | Seal, Front | 1 | SN: 56577-UP |
| 2 | 6127-21-4240 | Lock | 2 | SN: 56577-UP |
| 2 | 6127-21-4260 | Lock | 1 | SN: 56577-UP |
| 2 | 6127-21-4815 | Gasket | 1 | SN: 56577-UP |
| 2 | 6127-21-5161 | Gasket | 1 | SN: 56577-UP |
| 2 | 6127-21-5851 | Gasket | 1 | SN: 56577-UP |
| 2 | 6127-31-1330 | Washer | 12 | SN: 56577-UP |
| 2 | 6127-31-1350 | Lock | 3 | SN: 56577-UP |
| 2 | 6127-31-8150 | Plate | 3 | SN: 56577-UP |
| 2 | 6127-51-1661 | Gasket | 1 | SN: 56577-UP |
| 2 | 6127-51-1661 | Gasket | 4 | SN: 56577-UP |
| 2 | 6127-51-5810 | Gasket | 1 | SN: 56577-UP |
| 2 | 6127-51-5842 | Gasket | 1 | SN: 56577-UP |
| 2 | 6127-51-5862 | Gasket | 1 | SN: 56577-UP |
| 2 | 6127-61-1190 | Grommet | 1 | SN: 56577-UP |
| 2 | 6127-61-3360 | Seal | 1 | SN: 56577-UP |
| 2 | 6127-61-3770 | Seal | 1 | SN: 56577-UP |
| 2 | 6127-61-3790 | Lock | 1 | SN: 56577-UP |
| 2 | 6127-61-6811 | Gasket | 1 | SN: 56577-UP |
| 2 | 6127-61-6851 | Gasket | 1 | SN: 56577-UP |
| 2 | 6127-71-3170 | Lock | 3 | SN: 56577-UP |
| 2 | 6127-71-3250 | Seal | 1 | SN: 56577-UP |
| 2 | 6127-71-3380 | Grommet | 1 | SN: 56577-UP |
| 2 | 6128-21-3231 | Gasket | 1 | SN: 56577-UP |
| 2 | 6128-21-3811 | Gasket | 1 | SN: 56577-UP |
| 2 | 6128-21-4230 | Seal, Rear | 1 | SN: 56577-UP |
| 2 | 6128-51-6831 | Gasket | 1 | SN: 56577-UP |
| 2 | 6128-61-6831 | Gasket | 2 | SN: 56577-UP |
| 2 | 6128-K2-9901 | Gasket Kit,Cylinder Block | 1 | SN: 57335-UP |
| 2 | 6150-71-1910 | Seal | 1 | SN: 56577-UP |
| 2 | 6162-73-1931 | Gasket | 1 | SN: 56577-UP |
| 2 | 6162-73-1960 | Washer | 1 | SN: 56577-UP |
| 2 | 6610-21-5671 | Gasket | 1 | SN: 56577-UP |
| 2 | 6610-71-1930 | Gasket | 1 | SN: 56577-UP |
| 2 | 6643-21-4731 | Plate | 4 | SN: 56577-UP |
| 2 | The part specified in the line above can be used instead of this part07000-62016 | O-Ring | 6 | SN: 56577-58936 |
| 2 | The part specified in the line above can be used instead of this part07000-63028 | O-Ring | 1 | SN: 56577-58936 |
| 2 | The part specified in the line above can be used instead of this part6128-21-6820 | Seal | 1 | SN: 56577-56628 |
| 2 | The part specified in the line above can be used instead of this part6128-K2-9900 | Gasket Kit,Cylinder Block | 1 | SN: 56577-57334 |
| 3 | 01658-26223 | Washer | 1 | SN: 56577-UP |
| 3 | 01658-26823 | Washer | 1 | SN: 56577-UP |
| 3 | 07000-03095 | O-Ring | 1 | SN: 56577-UP |
| 3 | 07000-03110 | O-Ring | 1 | SN: 56577-UP |
| 3 | 07000-05150 | O-Ring | 1 | SN: 56577-UP |
| 3 | 07000-05165 | O-Ring | 1 | SN: 56577-UP |
| 3 | 07000-05175 | O-Ring | 1 | SN: 56577-UP |
| 3 | 07005-01212 | Seal | 6 | SN: 56577-UP |
| 3 | 6127-21-4550 | Lock | 3 | SN: 56577-UP |
| 3 | 6128-21-4360 | Lock | 1 | SN: 56577-UP |
| 3 | 6128-21-4600 | Shim Ass'Y | 1 | SN: 56577-UP |
| 3 | 6128-K3-9900 | Gasket Kit,Power Take Off | 1 | SN: 56577-UP |
| 6 | 01658-02016 | Washer | 1 | SN: 56577-UP |
| 6 | 01658-22016 | Washer | 1 | SN: 56577-UP |
| 6 | 07000-03042 | O-Ring | 1 | SN: 56577-UP |
| 6 | 07000-03135 | O-Ring | 1 | SN: 56577-UP |
| 6 | 07000-05140 | O-Ring | 1 | SN: 56577-UP |
| 6 | 07012-20042 | Seal | 1 | SN: 56577-UP |
| 6 | 6124-61-1320 | V-Ring | 1 | SN: 56577-UP |
| 6 | 6127-61-6851 | Gasket | 1 | SN: 56577-UP |
| 6 | 6128-K6-9901 | Gasket Kit,Water Pump | 1 | SN: 57335-UP |
| 6 | 6211-61-1521 | Seal, Water | 1 | SN: 56629-UP |
| 6 | The part and the part specified in the line immediately above are interchangeable.6211-61-1520 | Seal, Water | 1 | SN: 56577-56628 |
| 6 | The part specified in the line above can be used instead of this part6128-K6-9900 | Gasket Kit,Water Pump | 1 | SN: 56577-57334 |
Shop the Komatsu Engine Engine Overhaul Kits collection
How to use this engine system hub
Use this hub as a rebuild-planning reference for gasket sets, liners, pistons, rings, bearings, seals, and rebuild-related components.
Many Komatsu engine repairs involve small differences by serial range and arrangement. Use this hub as a practical starting point, then confirm the exact part number against your engine book or serial-specific reference.
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Additional related hubs are available in the Komatsu engine parts catalog as we continue expanding the Keep Ops Moving structure.
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This hub includes 1,162 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.