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Excavator Alternators

321-8929 24V 85A Alternator for CAT 312E C4.4

321-8929 24V 85A Alternator for CAT 312E C4.4, OEM/reference 321-8929, Alternator, product view 1
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OEM / reference321-8929
SpecificationAlternator
Catalog ID53632880

Alternator identified by primary reference 321-8929. Catalog-confirmed configuration: 24V, 85A. The cited technical sources record 2 application references. Confirm the complete number, connector or mounting arrangement, and machine serial range before ordering.

Product Type
Alternator
Product Brand
EexcavaStart
Voltage
24V 85A
Model Number
321-8929 321-8931
Engine Model
CAT 312E C4.4
Voltage
24 volt
Amperage
85 amp
Size A
37 mm
Size B
80 mm
Size C
71 mm
Grooves/pulley
8 pcs
Terminal type
L-W
Vacuum Pump
no
Condition
New replacement part
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Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.

Part-number relationships

RelationshipReference familyNumber
Primary Part NumberSource catalog321-8929
Catalog Cross-Reference - Verify ConfigurationRecorded in the cited catalog family; confirm electrical, mounting and application configuration321-8931
Catalog Cross-Reference - Verify ConfigurationRecorded in the cited catalog family; confirm electrical, mounting and application configuration20R3600
Same-number Formatting VariantSource catalog3218929
Catalog Cross-Reference - Verify ConfigurationRecorded in the cited catalog family; confirm electrical, mounting and application configuration3218932
Catalog Cross-Reference - Verify ConfigurationRecorded in the cited catalog family; confirm electrical, mounting and application configuration4157107
Catalog Cross-Reference - Verify ConfigurationRecorded in the cited catalog family; confirm electrical, mounting and application configuration5606104
Catalog Cross-Reference - Verify ConfigurationRecorded in the cited catalog family; confirm electrical, mounting and application configuration5606109
Catalog Cross-Reference - Verify ConfigurationRecorded in the cited catalog family; confirm electrical, mounting and application configuration5935777
Catalog Cross-Reference - Verify ConfigurationRecorded in the cited catalog family; confirm electrical, mounting and application configuration8600366
Catalog Cross-Reference - Verify ConfigurationRecorded in the cited catalog family; confirm electrical, mounting and application configurationA1818
Catalog Cross-Reference - Verify ConfigurationRecorded in the cited catalog family; confirm electrical, mounting and application configurationALD6932ML
Catalog Cross-Reference - Verify ConfigurationRecorded in the cited catalog family; confirm electrical, mounting and application configurationALD8932BJ
Catalog Cross-Reference - Verify ConfigurationRecorded in the cited catalog family; confirm electrical, mounting and application configurationALD8932LK
Catalog Cross-Reference - Verify ConfigurationRecorded in the cited catalog family; confirm electrical, mounting and application configurationALD8932ML
Catalog Cross-Reference - Verify ConfigurationRecorded in the cited catalog family; confirm electrical, mounting and application configurationALD8932UH
Catalog Cross-Reference - Verify ConfigurationRecorded in the cited catalog family; confirm electrical, mounting and application configurationT407039
Catalog Cross-Reference - Verify ConfigurationRecorded in the cited catalog family; confirm electrical, mounting and application configurationT430455
Catalog Cross-Reference - Verify ConfigurationRecorded in the cited catalog family; confirm electrical, mounting and application configurationT430458
Catalog Cross-Reference - Verify ConfigurationRecorded in the cited catalog family; confirm electrical, mounting and application configuration301N21031Z

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
  • 321-8929
Formatting alias
  • 3218929
Other documented relationship
  • 321-8931
  • 20R3600
  • 3218932
  • 4157107
  • 5606104
  • 5606109
  • 5935777
  • 8600366
  • A1818
  • ALD6932ML
  • ALD8932BJ
  • ALD8932LK
  • ALD8932ML
  • ALD8932UH
  • T407039
  • T430455
  • T430458
  • 301N21031Z

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

Product summary

Alternator

Category
Excavator Alternators
Catalog ID
53632880
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

2 model references

  • Recorded application: CATERPILLAR EXCAVATOR 312E, 312E L, 314E CR, 314E LCR, 316E L, 318E L
  • Recorded application: INDUSTRIAL ENGINE C4.4 C7.1

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 321-8929

Which machines use 321-8929?

Recorded compatible model references include Recorded application: CATERPILLAR EXCAVATOR 312E, 312E L, 314E CR, 314E LCR, 316E L, 318E L, Recorded application: INDUSTRIAL ENGINE C4.4 C7.1. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 321-8929?

Formatting aliases for the same number: 3218929.

How do I confirm 321-8929 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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