Excavator Alternators

3972529 24V 70A 8PK Alternator for Cummins 6BT / 6CT Engines

Q: What numbers are documented for 3972529?

Primary OE Number: 3972529. Manufacturer Part Number: 3415609. Direct Replacement Number: 3979372. Direct Replacement Number: 4939018. Direct Replacement Number: 4942002. Interchange Reference: A9508S. Manufacturer Family Reference: JFZ2710F. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 3972529 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.

3972529 24V 70A 8PK Alternator for Cummins 6BT / 6CT Engines, OEM/reference 3972529, 24V 70A 8PK Alternator, product view 1

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OEM / reference3972529

Specification24V 70A 8PK Alternator

Catalog ID53694522

3415609 3972529 24V 70A Alternator for Cummins 6CT. Documented cross-reference numbers: 3415609, 3972529. Compatibility references include Cummins 6CT, JFZ2703, Cummins 6B, C3972529. Verify the complete part number, mounting or connector configuration, and machine serial range before ordering.

Product Type: Alternator
Nominal Voltage: 24V
Rated Output: 70A
Pulley: 8PK / eight-groove
Pulley Diameter: 60mm catalog value
Regulator / Fan: Internal regulator / internal fan
Mounting Holes: 3 catalog mounting holes

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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 OE Number	Cummins number	3972529
Manufacturer Part Number	Cummins cross-reference	3415609
Direct Replacement Number	Cummins cross-reference	3979372
Direct Replacement Number	Cummins cross-reference	4939018
Direct Replacement Number	Cummins cross-reference	4942002
Interchange Reference	Published catalog reference	A9508S
Manufacturer Family Reference	Prestolite family	JFZ2710F

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

3972529

Manufacturer number

3415609
JFZ2710F

Direct interchange

3979372
4939018
4942002
A9508S

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

Product summary

24V 70A 8PK Alternator

Category: Excavator Alternators
Catalog ID: 53694522
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

3 model references

Cummins engine family: 6BT / EQB 5.9L
Cummins engine family: 6CT / 6C8.3 industrial family
Fitment limitation: Confirm 3972529 / 3415609, 24V 70A, 8PK pulley, terminal layout, mounting dimensions and machine 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 3972529

Which machines use 3972529?

Recorded compatible model references include Cummins engine family: 6BT / EQB 5.9L, Cummins engine family: 6CT / 6C8.3 industrial family, Fitment limitation: Confirm 3972529 / 3415609, 24V 70A, 8PK pulley, terminal layout, mounting dimensions and machine serial range. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 3972529?

Documented direct interchanges: 3979372, 4939018, 4942002, A9508S. Manufacturer number: 3415609, JFZ2710F.

How do I confirm 3972529 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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