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Alternators

DL 12V 50A Excavator Alternator OEM A2T12771 A2T12978

OEM / referenceA2T12771 A2T12978 · 4DR5 4DR7
Specification12V 50A
Catalog ID53656613

12V 50A reference A2T12771 A2T12978. Compatibility references include 4DR5, 4DR7. Compare the part number, connector layout, mounting points and the original unit before ordering; machine serial range can affect fitment.

OEM
A2T12771 A2T12978
Feature
Alternator
VDC
12V 50A
Engine Model
4DR5 4DR7

Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.

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

  • A2T12771
  • A2T12978
  • A2T12771 A2T12978

Search with or without hyphens. Match the complete number on the original part.

Product summary

12V 50A

Category
Alternators
Catalog ID
53656613
Photo views
4

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

  • 4DR5
  • 4DR7

Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.

Continue comparing recovered references from the same system.

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