Excavator Alternators

3218577R91 Alternator for Case IH 433 533 633 733 833 940 Tractors

Q: What numbers are documented for 3218577R91?

Primary Equipment Part Number: 3218577R91. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 3218577R91 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.

3218577R91 Alternator for Case IH 433 533 633 733 833 940 Tractors, OEM/reference 3218577R91, Alternator, product view 1

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OEM / reference3218577R91

SpecificationAlternator

Catalog ID77173861

Alternator assembly identified by Case IH number 3218577R91. Official catalog records cover 433 through 940 tractor families and related D/DT engine-series arrangements. Two reviewed product views show the pulley, mounting foot and rear electrical layout. Confirm the complete part number, pulley, mounting, terminals, tractor model and serial before ordering.

Product Type: Alternator
Primary Part Number: 3218577R91
Electrical and Mounting Details: Confirm original unit and nameplate
Condition: New replacement assembly

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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	Case IH catalog identity	3218577R91

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

3218577R91

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

Product summary

Alternator

Category: Excavator Alternators
Catalog ID: 77173861
Photo views: 2

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

2 model references

Official Case IH catalog equipment: 433, 433e, 433v, 440, 533, 533e, 533v, 540, 633, 633e, 633v, 640, 733, 733e, 740, 833, 833e, 840, 940, d-155, d-179, d-206, d-239, d-246, d-268, d-310, d-358, dt-239, dt-358, dt-402
Fitment Limitation: Confirm complete number, original configuration, equipment model 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 3218577R91

Which machines use 3218577R91?

Recorded compatible model references include Official Case IH catalog equipment: 433, 433e, 433v, 440, 533, 533e, 533v, 540, 633, 633e, 633v, 640, 733, 733e, 740, 833, 833e, 840, 940, d-155, d-179, d-206, d-239, d-246, d-268, d-310, d-358, dt-239, dt-358, dt-402, Fitment Limitation: Confirm complete number, original configuration, equipment model and serial. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 3218577R91?

No alternate number is listed for 3218577R91. Send the original nameplate for an alternate-number check.

How do I confirm 3218577R91 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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