Excavator Engine Parts

3957795 Piston for Cummins B5.9 QSB3.9 QSB5.9 CPL-Specific Engines

Name: 3957795 Piston for Cummins B5.9 QSB3.9 QSB5.9 CPL-Specific Engines
Brand: EexcavaStart
SKU: 3957795

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OEM / reference3957795

SpecificationEngine Piston

Catalog ID53745777

Piston identified by part number 3957795 for selected Cummins B5.9-family engines. The Cummins overhaul guide assigns 3957795 only to specific CPLs; published applications include 4BTAA3.9 CPL 2943, QSB3.9 CPL 8058, 8148, 8149 and 8492, QSB5.9 CPL 8105, 8483 and 8604, and 6BTAA5.9 CPL 8111. Confirm the engine serial number, CPL, piston crown, bowl, pin and ring configuration before ordering.

Product Type: Engine Piston
Product Brand: EexcavaStart
Engine Family: Cummins B5.9 family; CPL-specific
Included Parts: Piston and rings shown; confirm quotation contents
Condition: New replacement part

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Part-number relationships

Relationship	Reference family	Number
Primary Manufacturer Part Number	Cummins B5.9-family piston	3957795
Aftermarket Catalog Number	Published aftermarket cross-reference	111589

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

3957795

Other documented relationship

111589

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

Product summary

Engine Piston

Category: Excavator Engine Parts
Catalog ID: 53745777
Photo views: 5

Before ordering

Confirm these details

Match the complete part number on the original component.
Compare connectors, mounting points and visible dimensions with the product photos.
Confirm the exact machine or engine model and serial range before ordering.

Machine fitment

Compatible model references

6 model references

Engine / CPL: 4BTAA3.9 — CPL 2943
Engine / CPL: QSB3.9 — CPL 8058, 8148, 8149, 8492
Engine / CPL: QSB5.9 — CPL 8105, 8483, 8604
Engine / CPL: 6BTAA5.9 — CPL 8111
Additional B5.9 CPLs: 2678, 2846, 8058, 8105, 8111, 8148, 8149, 8265, 8266, 8267, 8337, 8483, 8492, 8604, 8623
Fitment limitation: Confirm ESN/CPL, piston crown, bowl, pin and ring configuration

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 3957795

Which machines use 3957795?

Recorded compatible model references include Engine / CPL: 4BTAA3.9 — CPL 2943, Engine / CPL: QSB3.9 — CPL 8058, 8148, 8149, 8492, Engine / CPL: QSB5.9 — CPL 8105, 8483, 8604, Engine / CPL: 6BTAA5.9 — CPL 8111, Additional B5.9 CPLs: 2678, 2846, 8058, 8105, 8111, 8148, 8149, 8265, 8266, 8267, 8337, 8483, 8492, 8604, 8623, Fitment limitation: Confirm ESN/CPL, piston crown, bowl, pin and ring configuration. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 3957795?

No alternate number is listed for 3957795. Send the original nameplate for an alternate-number check.

How do I confirm 3957795 before ordering?

Match the complete part number on the original component. Compare connectors, mounting points and visible dimensions with the product photos. Confirm the exact machine or engine model and serial range before ordering. Send clear photos of the original unit and connector layout when requesting a quote.

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