Excavator Engine Parts

G3976831 Belt Tensioner for Cummins B ISB QSB Engines

Q: What numbers are documented for G3976831?

Primary Recorded Part Number: G3976831. Manufacturer Part Number: 3976831. Current Replacement Number: 5259022. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm G3976831 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.

G3976831 Belt Tensioner for Cummins B ISB QSB Engines, OEM/reference G3976831, Automatic Belt Tensioner, product view 1

1 / 6

6 product photos · Swipe on mobile, or hover and select a thumbnail.

OEM / referenceG3976831

SpecificationAutomatic Belt Tensioner

Catalog ID61097045

Product Type: Automatic Belt Tensioner
Product Brand: EexcavaStart
Drive System: Engine accessory belt

Send email inquiry Ask on WhatsApp Return to catalog

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

Quotation details: MOQ, availability, lead time, item condition (new or remanufactured) and warranty coverage must be confirmed in your quotation before ordering.

Part-number relationships

Relationship	Reference family	Number
Primary Recorded Part Number	EexcavaStart source-folder number	G3976831
Manufacturer Part Number	Number visible on the photographed casting	3976831
Current Replacement Number	Cataloged replacement for old 3976831	5259022

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

G3976831

Manufacturer number

3976831

Other documented relationship

5259022

Formatting aliases are the same number written differently. Cross-references require a specification and fitment check; they do not by themselves confirm direct interchangeability. Related assemblies and remanufactured numbers are separate relationship types.

Product summary

Automatic Belt Tensioner

Category: Excavator Engine Parts
Catalog ID: 61097045
Photo views: 6

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

1 model reference

Engine family: Cummins 4B3.9 / B4.5 / 6B5.9 / B6.7 / ISB / QSB

Fitment / evidence notes

Fitment limitation: Confirm 3976831 or G3976831, engine CPL, pulley grooves and mounting offset

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 G3976831

Which machines use G3976831?

Recorded compatible model references include Engine family: Cummins 4B3.9 / B4.5 / 6B5.9 / B6.7 / ISB / QSB. Recorded fitment/evidence notes: Fitment limitation: Confirm 3976831 or G3976831, engine CPL, pulley grooves and mounting offset. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for G3976831?

Manufacturer number: 3976831.

How do I confirm G3976831 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.

Continue comparing verified references from the same system.

Browse this category