Excavator Alternators

5259578 24V 90A 8PK Alternator for Cummins QSB6.7 ISB6.7

Q: What numbers are documented for 5259578?

Primary Equipment Part Number: 5259578. Cataloged Manufacturer Reference: 0124655020 / 0124655082. Cataloged Equipment Reference: 4892320 / 2995978. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 5259578 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.

5259578 24V 90A 8PK Alternator for Cummins QSB6.7 ISB6.7, OEM/reference 5259578, 24V 90A 8PK Alternator, product view 1

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OEM / reference5259578

Specification24V 90A 8PK Alternator

Catalog ID88610837

24V 90A internal-regulator alternator identified by Cummins part number 5259578. Exact catalog records cross it to Bosch 0124655020/0124655082 and list an 8-groove pulley with Cummins QSB6.7/ISB6.7 applications. Confirm the complete number, pulley, connector and three-ear mount.

Product Type: Alternator
Product Brand: EexcavaStart
Rated Voltage: 24V
Rated Amperage: 90A
Pulley: 8 grooves / 8PK
Regulator: Internal
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	Cummins alternator	5259578
Cataloged Manufacturer Reference	Bosch alternator family	0124655020 / 0124655082
Cataloged Equipment Reference	Cummins/market cross-reference	4892320 / 2995978

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

5259578

Manufacturer number

0124655020 / 0124655082

Other documented relationship

4892320 / 2995978

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

Product summary

24V 90A 8PK Alternator

Category: Excavator Alternators
Catalog ID: 88610837
Photo views: 2

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

Cataloged engine family: Cummins QSB6.7 / ISB6.7
Fitment limitation: Confirm number, pulley, connector and three-ear mount

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 5259578

Which machines use 5259578?

Recorded compatible model references include Cataloged engine family: Cummins QSB6.7 / ISB6.7, Fitment limitation: Confirm number, pulley, connector and three-ear mount. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 5259578?

Manufacturer number: 0124655020 / 0124655082.

How do I confirm 5259578 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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