Excavator Alternators

212-8561 28V 50A Alternator for Cat 320C 320D 321D 323D

Q: What numbers are documented for 212-8561?

Primary Cat Part Number: 212-8561. Same-number Formatting Variant: 2128561. Related Remanufactured Number: 10R-7561. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 212-8561 before ordering?

Match the complete part number, compare the connector or mounting arrangement with the product photos, and confirm the machine or engine model and serial range. Send clear photos of the original unit when requesting a quote.

212-8561 28V 50A Alternator for Cat 320C 320D 321D 323D, OEM/reference 212-8561, Charging Alternator Group, product view 1

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OEM / reference212-8561

SpecificationCharging Alternator Group

Catalog ID53632982

Cat identifies 212-8561 as a 28-volt, 50-amp charging alternator group. The official record specifies a brush-type design, pivot mount and four poles, with compatible 320C, 320D, 321C, 321D and 323D excavator families. Five selected owned photographs show the same alternator, pulley, connector, pivot mount and rear housing. Confirm 212-8561, electrical output, connector and machine serial range before ordering.

Product Type: Charging Alternator Group
Voltage: 28 V
Rated Output: 50 A
Design: Brush type
Mount Type: Pivot
Poles: 4
Material: Carbon steel
Condition: New replacement alternator

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Part-number relationships

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

Part numbers and compatible models

Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.

Part identification

Reference numbers

Primary number

212-8561

Formatting alias

2128561

Remanufactured number

10R-7561

Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.

Product summary

Charging Alternator Group

Category: Excavator Alternators
Catalog ID: 53632982
Photo views: 5

Before ordering

Confirm these details

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.
Verify the engine model and machine serial range before ordering.

Machine fitment

Compatible model references

4 model references

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
Fitment limitation: Confirm 212-8561, 28 V/50 A output, pulley, connector, mount and machine serial range before shipment

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

Common questions about 212-8561

Which machines use 212-8561?

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, 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.

What numbers are documented for 212-8561?

Formatting aliases for the same number: 2128561. Remanufactured references: 10R-7561.

How do I confirm 212-8561 before ordering?

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.

Continue comparing verified references from the same system.

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