Alternators

Caterpillar 3E-7577 Alternator for 11 11SU 11U

Q: What numbers are documented for 3E-7577?

Primary Part Number: 3E-7577. Cross-reference number - verify configuration: 321-697. Cross-reference number - verify configuration: ADR0248. Cross-reference number - verify configuration: 400-12353. Cross-reference number - verify configuration: 110591. Cross-reference number - verify configuration: 0R3615. Cross-reference number - verify configuration: 3675108RX. Cross-reference number - verify configuration: 10459062. Cross-reference number - verify configuration: 10459071. Cross-reference number - verify configuration: 10459076. Cross-reference number - verify configuration: 10459102. Cross-reference number - verify configuration: 10459148. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 3E-7577 before ordering?

Match the complete part number, compare the connector or mounting arrangement with your original unit and the recorded specifications, and confirm the machine or engine model and serial range. Send clear photos of the original unit when requesting a quote.

EexcavaStart packaging illustration · Not a photograph of this exact part. Exact-unit photo availability is not confirmed; send your original part number and unit photos with your inquiry.

OEM / reference3E-7577

SpecificationAlternator

Catalog ID91000735

Product Type: Alternator
Supply Brand: EexcavaStart
Equipment Brand: Caterpillar
Catalog Classification: Alternator Gp -B
Application Records: 164
Condition: New replacement part
Gallery Representation: EexcavaStart neutral packaging illustration; exact product photo available on request
Voltage: 24 V
Amperage: 75 A
Rotation: Bidirectional
Regulator: Internal
Fan: External

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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 Part Number	Exact identity retained from the supplied application catalog	3E-7577
Cross-reference (fitment check required)	AC DELCO	321-697
Cross-reference (fitment check required)	ARROWHEAD	ADR0248
Cross-reference (fitment check required)	ARROWHEAD	400-12353
Cross-reference (fitment check required)	CARGO	110591
Cross-reference (fitment check required)	CATERPILLAR	0R3615
Cross-reference (fitment check required)	CUMMINS	3675108RX
Cross-reference (fitment check required)	DELCO	10459062
Cross-reference (fitment check required)	DELCO	10459071
Cross-reference (fitment check required)	DELCO	10459076
Cross-reference (fitment check required)	DELCO	10459102
Cross-reference (fitment check required)	DELCO	10459148
Cross-reference (fitment check required)	DELCO	10461237
Cross-reference (fitment check required)	DELCO	1117281
Cross-reference (fitment check required)	DELCO	19010000
Cross-reference (fitment check required)	DELCO	19010002
Cross-reference (fitment check required)	DELCO	19010008
Cross-reference (fitment check required)	DELCO	19010022
Cross-reference (fitment check required)	DELCO	19010024
Cross-reference (fitment check required)	EUCLID	E820131X
Cross-reference (fitment check required)	J&N Electrical Products	400-12080
Cross-reference (fitment check required)	J&N Electrical Products	400-12080R
Cross-reference (fitment check required)	LESTER	8062
Cross-reference (fitment check required)	Caterpillar	0R2415
Cross-reference (fitment check required)	Caterpillar	5Z1083
Cross-reference (fitment check required)	Caterpillar	8N0999

Product fitment guide

Part numbers and compatible models

Quickly compare the reference number and recorded machine applications. Use photos of your original unit and the checklist before ordering.

Part identification

Reference numbers

Primary number

3E-7577

Cross-reference (fitment check required)

321-697
ADR0248
400-12353
110591
0R3615
3675108RX
10459062
10459071
10459076
10459102
10459148
10461237
1117281
19010000
19010002
19010008
19010022
19010024
E820131X
400-12080
400-12080R
8062
0R2415
5Z1083
8N0999

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

Alternator

Category: Alternators
Catalog ID: 91000735
Illustration views: 1

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

18 model references

Machine models 1: 11 / 11SU / 11U / 120H / 120H ES / 120H NA / 12H ES / 12H NA / 135H NA / 140H ES
Machine models 2: 140H NA / 143H / 14H NA / 160H ES / 160H NA / 163H NA / 16H NA / 345B / 345B II / 345B II MH
Machine models 3: 345B L / 350 L / 350-A / 350-A L / 3508 / 3512 / 3512B / 3512C / 3516 / 3516B
Machine models 4: 365B / 365B II / 365B L / 375-A / 375-A L / 385B / 5080 / 5090B / 572R II / 58
Machine models 5: 58L / 59L / 59N / 621E / 621F / 621G / 623E / 623F / 623G / 627E
Machine models 6: 627F / 627G / 631E / 631G / 633E II / 637E / 637G / 651E / 657E / 785
Machine models 7: 789 / 793 / 797 / 797B / 814F / 815F / 816F / 824G / 825G / 826G
Machine models 8: 834B / 836 / 9 / 938G / 938G II / 950F / 950G / 950G II / 950H / 962G
Machine models 9: 962G II / 962H / 966F II / 966G / 966G II / 970F / 972G / 972G II / 980G / 988B
Machine models 10: 988F / 988F II / 992C / 992D / 9SU / 9U / AD30 / AD40 / AD45 / AE40
Machine models 11: AE40 II / CX31-C9I / CX31-P600 / CX48-P2300 / D10N / D11N / D250E II / D300E II / D6R / D6R II
Machine models 12: D7R / D7R II / D8N / D8R / D8R II / D9N / G3516 / R1300 / R1300G / R1600
Machine models 13: R1600G / R1700 II / R1700G / R2900 / R2900G / TH31-C9I / TH31-C9P / TH31-E61 / TH48-E70 / TH48-E80
Machine models 14: W345B II
Engine models 1: 3114 / 3126B / 3176B / 3176C / 3196 / 3306 / 3406 / 3406C / 3406E / 3408
Engine models 2: 3408B / 3408C / 3408E / 3412 / 3412C / 3412E / 3456 / 3456B / 3456E / 3508
Engine models 3: 3508B / 3512 / 3512B / 3512C / 3512E / 3516 / 3516B / 3516C / 3524B / C-10
Engine models 4: C-12 / C-9

Fitment / evidence notes

Fitment limitation: Confirm the exact part number, electrical rating, terminal layout, mounting and machine serial range before shipment

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 3E-7577

Which machines use 3E-7577?

Recorded compatible model references include Machine models 1: 11 / 11SU / 11U / 120H / 120H ES / 120H NA / 12H ES / 12H NA / 135H NA / 140H ES, Machine models 2: 140H NA / 143H / 14H NA / 160H ES / 160H NA / 163H NA / 16H NA / 345B / 345B II / 345B II MH, Machine models 3: 345B L / 350 L / 350-A / 350-A L / 3508 / 3512 / 3512B / 3512C / 3516 / 3516B, Machine models 4: 365B / 365B II / 365B L / 375-A / 375-A L / 385B / 5080 / 5090B / 572R II / 58, Machine models 5: 58L / 59L / 59N / 621E / 621F / 621G / 623E / 623F / 623G / 627E, Machine models 6: 627F / 627G / 631E / 631G / 633E II / 637E / 637G / 651E / 657E / 785, Machine models 7: 789 / 793 / 797 / 797B / 814F / 815F / 816F / 824G / 825G / 826G, Machine models 8: 834B / 836 / 9 / 938G / 938G II / 950F / 950G / 950G II / 950H / 962G and 10 additional models shown on this page. Recorded fitment/evidence notes: Fitment limitation: Confirm the exact part number, electrical rating, terminal layout, mounting and machine serial range before shipment. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 3E-7577?

Cross-references are listed in the relationship table above. Compare specifications and the original unit before treating a reference as interchangeable.

How do I confirm 3E-7577 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.