Part-number relationships
| Relationship | Reference family | Number |
|---|---|---|
| Primary Equipment Part Number | Komatsu engine wiring harness | 6251-81-9810 |
| Formatted Alias | Unhyphenated search format | 6251819810 |
Excavator Engine Parts
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Engine wiring harness identified by part number 6251-81-9810. Komatsu records identify it as an electrical wiring harness, while exact-number application records support PC400-7E0, PC400-8, PC450-7E0 and PC450-8 machines with SAA6D125-family engines. Confirm the engine suffix, connector keying, branch lengths and machine serial prefix.
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Equipment Part Number | Komatsu engine wiring harness | 6251-81-9810 |
| Formatted Alias | Unhyphenated search format | 6251819810 |
Product fitment guide
Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.
Part identification
Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.
Product summary
Before ordering
Machine fitment
3 model references
Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.
Quick fitment answers
Recorded compatible model references include Engine family: Komatsu SAA6D125-5 family, Excavator family: PC400-7E0 / PC400-8 / PC400LC-8 / PC450-7E0 / PC450-8, Fitment limitation: Confirm 6251-81-9810, engine suffix, connector keying, branch lengths and machine serial prefix. Confirm the complete part number and machine serial range before ordering.
Formatting aliases for the same number: 6251819810.
Match the complete part number on the original component. Compare connectors, mounting points and visible dimensions with the product photos. Confirm the exact machine or engine model and serial range before ordering. Send clear photos of the original unit and connector layout when requesting a quote.
Continue comparing verified references from the same system.