Excavator Alternators

1-87618283-0 1-81200530-4 24V 50A Alternator for Isuzu 4BG1 6BG1 6WG1

Name: 1-87618283-0 1-81200530-4 24V 50A Alternator for Isuzu 4BG1 6BG1 6WG1
Brand: EexcavaStart
SKU: 1-87618283-0

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OEM / reference1-87618283-0

Specification24V 50A Alternator

Catalog ID77165507

The Isuzu Select Parts catalog identifies alternator 1-87618283-0, pairs it with Isuzu genuine number 1-81200530-4 and publishes 24V 50A for 4BG1, 6BG1 and 6WG1 engine families. The approved owned nameplate independently shows 1-87618283-0 and 24V 50A. Cross-reference catalogs for genuine number 1812005304 record clockwise rotation, a two-groove 82 mm pulley and related manufacturer catalog numbers. Some aftermarket catalogs express regulated charging output as 28V; this page uses the Isuzu catalog and physical nameplate convention of a 24V system alternator. Confirm the complete number, pulley, mounting ears, plug and engine or machine serial before shipment.

Product Type: Alternator
Vehicle System / Nameplate Voltage: 24 V
Published Current: 50 A
Published Rotation: Clockwise
Published Pulley Diameter: 82 mm
Published Pulley Grooves: 2
Published B+ Terminal: M6
Published Mounting Dimensions: A 60 mm / B 13 mm / C 71 mm

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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 Select Parts Number	Isuzu Select Parts catalog identity	1-87618283-0
Formatted Alias	Same Select Parts number without separators	1876182830
Isuzu Genuine Part Number	Catalog-paired genuine number	1-81200530-4
Formatted Genuine Alias	Same genuine number without separators	1812005304
Replacement Catalog Number	Lucas replacement catalog family	LEA1090
Published Cross-Reference Family	Cross-reference catalog family; verify configuration before ordering	A004TU5485 / A004TU5486 / A004TU9586

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

1-87618283-0

Formatting alias

1876182830
1812005304

Other documented relationship

1-81200530-4
LEA1090
A004TU5485 / A004TU5486 / A004TU9586

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

Product summary

24V 50A Alternator

Category: Excavator Alternators
Catalog ID: 77165507
Photo views: 3

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

7 model references

Isuzu engine family: 4BG1
Isuzu engine family: 6BG1
Isuzu engine family: 6WG1
Published machine application: John Deere 180CW with 4BG1X
Published machine application: John Deere 450DLC / 650DLC / 850DLC with 6WG1X
Published machine application: John Deere 800CLC with 6WG1
Fitment limitation: Confirm complete number, pulley, mounting ears, two-blade plug and machine 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 1-87618283-0

Which machines use 1-87618283-0?

Recorded compatible model references include Isuzu engine family: 4BG1, Isuzu engine family: 6BG1, Isuzu engine family: 6WG1, Published machine application: John Deere 180CW with 4BG1X, Published machine application: John Deere 450DLC / 650DLC / 850DLC with 6WG1X, Published machine application: John Deere 800CLC with 6WG1, Fitment limitation: Confirm complete number, pulley, mounting ears, two-blade plug and machine serial. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 1-87618283-0?

Formatting aliases for the same number: 1876182830, 1812005304.

How do I confirm 1-87618283-0 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.