Excavator Alternators

66021507 24V 55A Alternator for Cummins L10 and Perkins 1000 Series

Q: What numbers are documented for 66021507?

Primary Manufacturer Part Number: 66021507. Manufacturer Formatting Variant: 6602-1507. Equipment Manufacturer Number: 550117. Equipment Manufacturer Number: 2871A003. Legacy Manufacturer Cross-Reference: 857612. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 66021507 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.

66021507 24V 55A Alternator for Cummins L10 and Perkins 1000 Series, OEM/reference 66021507, 24V 55A Alternator, product view 1

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OEM / reference66021507

Specification24V 55A Alternator

Catalog ID85322000

Externally fanned 24V 55A alternator identified by manufacturer number 66021507 (formatted 6602-1507). Application catalogs support Cummins L10-powered ERF trucks and Perkins 1000-series industrial engines. Confirm the mounting spool, terminals, shaft and pulley requirement.

Product Type: Externally Fanned Alternator
Product Brand: EexcavaStart
Rated Voltage: 24V
Rated Output: 55A
Rotation: Bidirectional
Grounding: Insulated return
Pulley: Not supplied
Mounting: 3-inch spool mount
Shaft Diameter: 19 mm
Terminals: B+ / B- / D+ / W

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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 Manufacturer Part Number	Prestolite alternator	66021507
Manufacturer Formatting Variant	Formatted manufacturer number	6602-1507
Equipment Manufacturer Number	Cummins catalog reference	550117
Equipment Manufacturer Number	Perkins catalog reference	2871A003
Legacy Manufacturer Cross-Reference	Prestolite/CAV replacement family	857612

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

66021507

Manufacturer number

6602-1507
550117
2871A003
857612

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: 85322000
Photo views: 6

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

Truck application: ERF EC10 with Cummins L10 engine
Perkins engine family: 1000-6 / 1004-4
Fitment limitation: Confirm 66021507, mounting spool, terminals, shaft and pulley requirement

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 66021507

Which machines use 66021507?

Recorded compatible model references include Truck application: ERF EC10 with Cummins L10 engine, Perkins engine family: 1000-6 / 1004-4, Fitment limitation: Confirm 66021507, mounting spool, terminals, shaft and pulley requirement. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 66021507?

Manufacturer number: 6602-1507, 550117, 2871A003, 857612.

How do I confirm 66021507 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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