Komatsu WA250-1 Wheel Loader Cylinder Head Parts
Komatsu WA250-1 cylinder head parts for machine serial 10001-UP. View this configuration's diagram, part numbers, quantities and options; shop or request a quote.
Catalog configuration: S6D105-1TT S/N 86423-UP / Engine Cylinder Head / Cylinder Head.
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Aftermarket parts reference illustration · Click to enlarge. Actual supplied parts may differ.
Assembly parts
Showing all 34 part occurrences
Select any parts and adjust quantities. Store products go to your cart; parts without a store match go into a quote request. Each button handles only its matching selections.
| Line | Part number | Description | Qty | Order qty | Purchase options | |
|---|---|---|---|---|---|---|
| 0 | CYLINDER HEAD ASS'Y,WITH VALVESN: 86423-UP | 1 | Request quote | |||
| 1 | CYLINDER HEAD ASS'Y,VALVE LESSSN: 86423-UP | 1 | Request quote | |||
| 2 | SLEEVE,HOLDERSN: 86423-UP | 6 | View product ↗ | |||
| 3 | SEAT,INTAKE VALVE (STD)SN: 86423-UP | 6 | View product ↗ | |||
| 3 | SEAT, 0.25MM,INTAKE VALVE (OS)SN: 86423-UP | 6 | View product ↗ | |||
| 3 | SEAT, 0.50MM,INTAKE VALVE (OS)SN: 86423-UP | 6 | View product ↗ | |||
| 3 | SEAT, 0.75MM,INTAKE VALVE (OS)SN: 86423-UP | 6 | Request quote | |||
| 3 | SEAT, 1.00MM,INTAKE VALVE (OS)SN: 86423-UP | 6 | Request quote | |||
| 4 | SEAT,EXHAUST VALVE (STD)SN: 86423-UP | 6 | View product ↗ | |||
| 4 | SEAT, 0.25MM,EXHAUST VALVE (OS)SN: 86423-UP | 6 | Request quote | |||
| 4 | SEAT, 0.50MM,EXHAUST VALVE (OS)SN: 86423-UP | 6 | Request quote | |||
| 4 | SEAT, 0.75MM,EXHAUST VALVE (OS)SN: 86423-UP | 6 | Request quote | |||
| 4 | SEAT, 1.00MM,EXHAUST VALVE (OS)SN: 86423-UP | 6 | Request quote | |||
| 5 | GUIDE,VALVESN: 86423-UP | 12 | Request quote | |||
| 6 | PLUGSN: 86423-UP | 13 | View product ↗ | |||
| 7 | PLUGSN: 86423-UP | 9 | View product ↗ | |||
| 8 | PLUGSN: 86423-UP | 7 | View product ↗ | |||
| 9 | VALVE,INTAKESN: 86423-UP | 6 | Request quote | |||
| 10 | VALVE,EXHAUSTSN: 86423-UP | 6 | View product ↗ | |||
| 11 | SPRING,VALVESN: 86423-UP | 12 | View product ↗ | |||
| 12 | GUIDE,SPRINGSN: 86423-UP | 12 | View product ↗ | |||
| 13 | COTTER,VALVESN: 86423-UP | 24 | View product ↗ | |||
| 14 | SEAT,SPRINGSN: 86423-UP | 12 | View product ↗ | |||
| 15 | GASKET,HEAD (K1)SN: 86423-UP | 1 | View product ↗ | |||
| 15 | GASKET,HEAD (K1)SN: (86423-95930) | This shows a discontinued part. The part specified in the above line is supplied instead. | 1 | View product ↗ | |||
| 16 | BOLT,HEADSN: 86423-UP | 26 | View product ↗ | |||
| 17 | HANGER,FRONTSN: 86423-UP | 1 | Request quote | |||
| 18 | GASKET (K1)SN: 86423-UP | 1 | Request quote | |||
| 19 | HANGER,REARSN: 86423-UP | 1 | Request quote | |||
| 20 | BRACKETSN: 86423-UP | 1 | Request quote | |||
| 21 | BOLTSN: 106090-UP | 2 | View product ↗ | |||
| 21 | BOLTSN: 86423-106089 | The part specified in the line above can be used instead of this part | 2 | View product ↗ | |||
| 22 | WASHER,SPRINGSN: 86423-106089 | 2 | View product ↗ | |||
| 23 | WASHERSN: 86423-106089 | 2 | View product ↗ |
Repeated parts remain separate. Source order is retained; diagram callout mapping has not yet been verified.
Assembly notes
This part cannot be supplied as an individual part. It is supplied as an assembly. | Sort Order: 1 | Description: HEAD,CYLINDER | QTY: 1 | OPTIONS: SN: 86423-UP
Using Komatsu WA250-1 Wheel Loader Cylinder Head Parts
Use the Komatsu WA250-1 Wheel Loader Cylinder Head Parts listing to identify aftermarket replacement parts within the engine cylinder head section. This wheel loader application is listed for machine serial 10001-UP; the diagram and parts table retain the selected configuration and its source notes.
The parts table contains 34 listed part occurrences, including cylinder head ass'y,with valve (reference 6137-12-1020), cylinder head ass'y,valve less (reference 6137-12-1200) and sleeve,holder (reference 6136-11-1130). Read any option and reference notes beside these entries before choosing a replacement; repeated references may represent separate positions in the source list.
The source engine application is S6D105-1TT (engine serial 86423-UP). Match that engine identification as well as the machine serial range; the general machine model is not a substitute for engine-specific applicability.
For cylinder-head and related engine parts, follow the applicability attached to the selected assembly. Gaskets, fasteners and other components must be checked by their listed references rather than assumed to interchange between engine versions.
Catalog quantities describe the illustrated assembly. Adjust the order quantity to what you need, select the relevant rows, and use Add selected to cart for verified store matches or Add selected to quote for quote items. The diagram alone does not establish current stock or part interchangeability.