Excavator Alternators
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40A internally regulated alternator identified by Komatsu number 600-821-6410. Exact-number catalogs support PC200-6 and PC200-6LC excavators with S6D102E/6D102 engines. Some catalogs describe the electrical system as 24V while others state the charging output as 28V; this is a voltage-convention difference that must be checked on the original nameplate. Confirm pulley grooves, plug and mounting ears before ordering.
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 alternator number | 600-821-6410 |
| Same-number Formatting Variant | Compact Komatsu formatting | 6008216410 |
| Cataloged Replacement Family | Denso replacement reference; verify pulley and plug | 101211-4310 |
| Cataloged Replacement Family | Denso replacement reference; verify pulley and plug | 102211-2820 |
| Cataloged Replacement Family | Denso replacement reference; verify pulley and plug | 102211-9060 |
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 Machine family: Komatsu PC200-6 / PC200-6LC, Engine family: Komatsu S6D102E / 6D102, Fitment limitation: Confirm 600-821-6410, nameplate voltage, pulley, plug and mounts. Confirm the complete part number and machine serial range before ordering.
Formatting aliases for the same number: 6008216410.
Confirm voltage and rated amperage against the original alternator label. Compare mounting ears, pulley type and pulley-groove count. Check plug shape, terminal position and regulator connection. Send clear photos of the original unit and connector layout when requesting a quote.
