Excavator Alternators

100-5045 24V 50A Brushless Alternator for Cat 3306 3406 Equipment

Q: What numbers are documented for 100-5045?

Primary Equipment Part Number: 100-5045. Formatted Alias: 1005045. Published Cat Family References: 100-5046 / 100-5047 / 9G9538 / 5S9088. Published Bosch Family: 0-122-469-004. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 100-5045 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.

100-5045 24V 50A Brushless Alternator for Cat 3306 3406 Equipment, OEM/reference 100-5045, 24V 50A Brushless Alternator, product view 1

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OEM / reference100-5045

Specification24V 50A Brushless Alternator

Catalog ID77123087

100-5045 is a 24V 50A brushless alternator used across Cat equipment powered by 3304, 3306 and 3406-family engines. Published applications include 215D/225D/235D/245D/330 excavators, 943/953/963/973 loaders and multiple grader and wheel-loader families. Confirm the J180 mount, clock position, regulator, pulley and machine serial.

Voltage: 24 V
Output Current: 50 A
Alternator Type: Brushless
Mount Type: J180 hinge
Polarity: Negative ground

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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 alternator reference	100-5045
Formatted Alias	Same number without separator	1005045
Published Cat Family References	Cataloged complete-unit family	100-5046 / 100-5047 / 9G9538 / 5S9088
Published Bosch Family	Catalog-associated number	0-122-469-004

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

100-5045

Formatting alias

1005045

Other documented relationship

100-5046 / 100-5047 / 9G9538 / 5S9088
0-122-469-004

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

Product summary

24V 50A Brushless Alternator

Category: Excavator Alternators
Catalog ID: 77123087
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

Engine families: Cat 3304 / 3306 / 3406
Representative machines: 215D / 225D / 235D / 245D / 330; 943 / 953 / 963 / 973
Fitment limitation: Confirm mount, clock position, regulator, pulley and serial

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 100-5045

Which machines use 100-5045?

Recorded compatible model references include Engine families: Cat 3304 / 3306 / 3406, Representative machines: 215D / 225D / 235D / 245D / 330; 943 / 953 / 963 / 973, Fitment limitation: Confirm mount, clock position, regulator, pulley and serial. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 100-5045?

Formatting aliases for the same number: 1005045.

How do I confirm 100-5045 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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