Alternators
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Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
Quotation details: MOQ, availability, lead time, item condition (new or remanufactured) and warranty coverage must be confirmed in your quotation before ordering.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Cat Part Number | Official new charging alternator group identity | 212-8561 |
| Same-number Formatting Variant | Search alias only | 2128561 |
| Related Remanufactured Number | Official Cat Reman alternator for the same published equipment family; confirm serial | 10R-7561 |
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. Cross-references require a specification and fitment check; they do not by themselves confirm direct interchangeability. Related assemblies and remanufactured numbers are separate relationship types.
Product summary
Before ordering
Machine fitment
3 model references
Fitment / evidence notes
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 Official Cat excavators: 320C / 320C L / 320C FM / 320D / 320D GC / 320D L / 320D LN / 320D FM / 320D FM RR / 320D LRR / 320D RR, Additional official excavators: 321C / 321D LCR / 323D / 323D L / 323D LN / 323D S / 323D SA, Other official equipment: 323D L and 323D LN mobile hydraulic power units. Recorded fitment/evidence notes: Fitment limitation: Confirm 212-8561, 28 V/50 A output, pulley, connector, mount and machine serial range before shipment. Confirm the complete part number and machine serial range before ordering.
Formatting aliases for the same number: 2128561. Remanufactured references: 10R-7561.
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.
