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Excavator Alternators

424-6821 24V 55A Alternator for Cat C4.4 312D2 313D2 315C 318D2

Name: 424-6821 24V 55A Alternator for Cat C4.4 312D2 313D2 315C 318D2
Brand: EexcavaStart
SKU: 424-6821

OEM / reference424-6821

Specification24V 55A Alternator

Catalog ID72061307

24V 55A charging alternator identified by Cat number 424-6821. The manufacturer record supports C4.4 engines and 312D2 L, 313D2 LGP, 315C and 318D2 L excavators; an independent exact-number record supports the 55A output. Confirm pulley, mounting pattern, terminals and serial range before ordering.

Fitment status: Verified · Checked 2026-07-29

Product Type: Alternator
Product Brand: EexcavaStart
Voltage: 24V
Rated Current: 55A
Condition: New replacement alternator

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Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.

Part-number relationships

Relationship	Reference family	Number
Primary Equipment Part Number	Cat charging-alternator number	424-6821
Same-number Formatting Variant	Compact Cat formatting	4246821

Evidence record

Source: Exact-reference evidence retained for internal audit
Evidence grade: manufacturer-supported
Checked: 2026-07-29

Source URLs, catalog files and local evidence paths are stored in the protected product audit record and are not public outbound links.

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

424-6821

Formatting alias

4246821

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

Product summary

24V 55A Alternator

Category: Excavator Alternators
Catalog ID: 72061307
Photo views: 3

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

Cataloged engine: Cat C4.4
Cataloged excavators: 312D2 L / 313D2 LGP / 315C / 318D2 L
Additional cataloged engine families: 3054C / 3054E / 3056 / 3056E / C2.2
Fitment limitation: Confirm pulley, mounting pattern, terminals and serial range

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 424-6821

Which machines use 424-6821?

Recorded compatible model references include Cataloged engine: Cat C4.4, Cataloged excavators: 312D2 L / 313D2 LGP / 315C / 318D2 L, Additional cataloged engine families: 3054C / 3054E / 3056 / 3056E / C2.2, Fitment limitation: Confirm pulley, mounting pattern, terminals and serial range. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 424-6821?

Formatting aliases for the same number: 4246821.

How do I confirm 424-6821 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 recovered references from the same system.

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