Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
Quotation details: MOQ, availability, lead time, item condition (new or remanufactured) and warranty coverage must be confirmed in your quotation before ordering.
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
Cross-reference (fitment check required)
ARROWHEAD
AND0432
Cross-reference (fitment check required)
ARROWHEAD
ND100211-0890
Cross-reference (fitment check required)
CARGO
111261
Cross-reference (fitment check required)
CATERPILLAR
0R3667
Cross-reference (fitment check required)
CATERPILLAR
100-5045
Cross-reference (fitment check required)
CATERPILLAR
100-5047
Cross-reference (fitment check required)
CATERPILLAR
5S9088
Cross-reference (fitment check required)
CATERPILLAR
6T7223
Cross-reference (fitment check required)
CATERPILLAR
7T6173
Cross-reference (fitment check required)
DENSO
100211-0890
Cross-reference (fitment check required)
DENSO
101211-6100
Cross-reference (fitment check required)
DENSO REMAN
9761219-610
Cross-reference (fitment check required)
J&N Electrical Products
400-52200
Cross-reference (fitment check required)
LESTER
12060
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
Cross-reference (fitment check required)
AND0432
ND100211-0890
111261
0R3667
100-5045
100-5047
5S9088
6T7223
7T6173
100211-0890
101211-6100
9761219-610
400-52200
12060
Other documented relationship
100-5046 / 100-5047 / 9G9538 / 5S9088
0-122-469-004
Formatting aliases are the same number written differently. Cross-references require a specification and fitment check; they do not by themselves confirm direct interchangeability. Related assemblies and remanufactured numbers are separate relationship types.
Product summary
24V 50A Brushless Alternator
Category
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.
Configuration restriction: Confirm the exact original number, 24V/50A rating, regulator, fan, brushless construction, J180 mounting, clock position, pulley and machine serial range. Listed applications are configuration references, not unconditional interchange.
Fitment / evidence notes
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, Caterpillar 815B: Equipment type: Compactor; Engine: 3306; Year: 1996, CATERPILLAR 16G: Equipment type: Grader; Engine: Cat. 3406; Year: 1991, CATERPILLAR 16G: Equipment type: Grader; Engine: Cat. 3406; Year: 1992, CATERPILLAR 16G: Equipment type: Grader; Engine: Cat. 3406; Year: 1993, CATERPILLAR 16G: Equipment type: Grader; Engine: Cat. 3406; Year: 1994, CATERPILLAR 16G: Equipment type: Grader; Engine: Cat. 3406; Year: 1995 and 300 additional models shown on this page. Recorded fitment/evidence notes: 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?
Documented reference numbers (verify configuration; not automatically direct interchanges): 100-5046 / 100-5047 / 9G9538 / 5S9088, 0-122-469-004. See the complete relationship table above. Cross-references are listed in the relationship table above. Compare specifications and the original unit before treating a reference as interchangeable. 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.
