Excavator Alternators

101211-1420 12V 40A Alternator for Komatsu PC45MR-5M PC55MR-5M

Q: What numbers are documented for 101211-1420?

Primary Part Number: 101211-1420. Catalog Cross-Reference - Verify Configuration: 22079N. Catalog Cross-Reference - Verify Configuration: 114384. Catalog Cross-Reference - Verify Configuration: 119751-77200. Catalog Cross-Reference - Verify Configuration: 146-93119. Catalog Cross-Reference - Verify Configuration: 20040125AV. Catalog Cross-Reference - Verify Configuration: 20040125OV. Catalog Cross-Reference - Verify Configuration: 22079. Catalog Cross-Reference - Verify Configuration: 290-0004. Catalog Cross-Reference - Verify Configuration: 554407RI. Catalog Cross-Reference - Verify Configuration: 554407RID. Catalog Cross-Reference - Verify Configuration: 985.508.040.050. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 101211-1420 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.

101211-1420 12V 40A Alternator for Komatsu PC45MR-5M PC55MR-5M, OEM/reference 101211-1420, Alternator, product view 1

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OEM / reference101211-1420

SpecificationAlternator

Catalog ID53628576

Alternator identified by primary reference 101211-1420. Catalog-confirmed configuration: 12V, 40A. The cited technical sources record 4 application references. Confirm the complete number, connector or mounting arrangement, and machine serial range before ordering.

Product Type: Alternator
Product Brand: EexcavaStart
Voltage: 12V 40A
Technical Specification: 40 Amp/12 Volt, V1
Design: IR/IF
Voltage: 12
Amperage: 40
Pulley Class: V1
Condition: New replacement part

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Part-number relationships

Relationship	Reference family	Number
Primary Part Number	Source catalog	101211-1420
Catalog Cross-Reference - Verify Configuration	Recorded in the cited catalog family; confirm electrical, mounting and application configuration	22079N
Catalog Cross-Reference - Verify Configuration	Recorded in the cited catalog family; confirm electrical, mounting and application configuration	114384
Catalog Cross-Reference - Verify Configuration	Recorded in the cited catalog family; confirm electrical, mounting and application configuration	119751-77200
Catalog Cross-Reference - Verify Configuration	Recorded in the cited catalog family; confirm electrical, mounting and application configuration	146-93119
Catalog Cross-Reference - Verify Configuration	Recorded in the cited catalog family; confirm electrical, mounting and application configuration	20040125AV
Catalog Cross-Reference - Verify Configuration	Recorded in the cited catalog family; confirm electrical, mounting and application configuration	20040125OV
Catalog Cross-Reference - Verify Configuration	Recorded in the cited catalog family; confirm electrical, mounting and application configuration	22079
Catalog Cross-Reference - Verify Configuration	Recorded in the cited catalog family; confirm electrical, mounting and application configuration	290-0004
Catalog Cross-Reference - Verify Configuration	Recorded in the cited catalog family; confirm electrical, mounting and application configuration	554407RI
Catalog Cross-Reference - Verify Configuration	Recorded in the cited catalog family; confirm electrical, mounting and application configuration	554407RID
Catalog Cross-Reference - Verify Configuration	Recorded in the cited catalog family; confirm electrical, mounting and application configuration	985.508.040.050
Catalog Cross-Reference - Verify Configuration	Recorded in the cited catalog family; confirm electrical, mounting and application configuration	CAL40442GS

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

101211-1420

Other documented relationship

22079N
114384
119751-77200
146-93119
20040125AV
20040125OV
22079
290-0004
554407RI
554407RID
985.508.040.050
CAL40442GS

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: 53628576
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

4 model references

Recorded application: Make: Komatsu · Model: PC45MR-5M · Year: 2015-2019 · Engine: L4 2.2L 0 4D88E-7
Recorded application: Make: Komatsu · Model: PC45MR-5M · Year: 2015-2019 · Engine: L4 2.2L 0 Komatsu 4D88E-7
Recorded application: Make: Komatsu · Model: PC55MR-5M · Year: 2015-2019 · Engine: L4 2.2L 0 4D88E-7
Recorded application: Make: Komatsu · Model: PC55MR-5M · Year: 2015-2019 · Engine: L4 2.2L 0 Komatsu 4D88E-7

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 101211-1420

Which machines use 101211-1420?

Recorded compatible model references include Recorded application: Make: Komatsu · Model: PC45MR-5M · Year: 2015-2019 · Engine: L4 2.2L 0 4D88E-7, Recorded application: Make: Komatsu · Model: PC45MR-5M · Year: 2015-2019 · Engine: L4 2.2L 0 Komatsu 4D88E-7, Recorded application: Make: Komatsu · Model: PC55MR-5M · Year: 2015-2019 · Engine: L4 2.2L 0 4D88E-7, Recorded application: Make: Komatsu · Model: PC55MR-5M · Year: 2015-2019 · Engine: L4 2.2L 0 Komatsu 4D88E-7. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 101211-1420?

No alternate number is listed for 101211-1420. Send the original nameplate for an alternate-number check.

How do I confirm 101211-1420 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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