Excavator Engine Parts

3949085 / 4935005 12V Fuel Transfer Pump for Cummins ISC ISL QSB

Q: What numbers are documented for 3949085?

Primary Equipment Part Number: 3949085. Service Family Reference: 4935005. Service Family Reference: 3939894. Service Family Reference: 3990071. Service Family Reference: 5362269. Service Family Reference: 3945502. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 3949085 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.

3949085 / 4935005 12V Fuel Transfer Pump for Cummins ISC ISL QSB, OEM/reference 3949085, 12V Electronic Fuel Transfer Pump, product view 1

1 / 2

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

OEM / reference3949085

Specification12V Electronic Fuel Transfer Pump

Catalog ID73807960

12V electronic fuel-transfer pump identified by Cummins number 3949085. Established Cummins replacement records place it in the 4935005/5362269 service family for ISB, QSB, ISC, ISL and selected ISX applications; a separate record specifically documents 2003-2006 8.3L ISL use. The old alternator classification and source-sequence SKU were incorrect and are excluded. Confirm the pump number, connector, ports, bracket, engine CPL and serial before ordering.

Product Type: Electronic fuel transfer pump
Voltage: 12V DC
Fuel System Position: Low-pressure fuel supply / transfer
Connector / Ports / Bracket: Compare with original unit
Condition: New replacement pump

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.

Part-number relationships

Relationship	Reference family	Number
Primary Equipment Part Number	Cummins fuel-transfer-pump number	3949085
Service Family Reference	Published main replacement number	4935005
Service Family Reference	Published replacement number	3939894
Service Family Reference	Published replacement number	3990071
Service Family Reference	Published replacement number	5362269
Service Family Reference	Published replacement number	3945502

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

3949085

Other documented relationship

4935005
3939894
3990071
5362269
3945502

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

Product summary

12V Electronic Fuel Transfer Pump

Category: Excavator Engine Parts
Catalog ID: 73807960
Photo views: 2

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

3 model references

Published engine series: Cummins ISB / QSB / ISC / ISL; selected ISX arrangements
Exact application record: Cummins 8.3L ISL, selected 2003-2006 arrangements
Fitment limitation: Confirm pump number, connector, ports, bracket, engine CPL 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 3949085

Which machines use 3949085?

Recorded compatible model references include Published engine series: Cummins ISB / QSB / ISC / ISL; selected ISX arrangements, Exact application record: Cummins 8.3L ISL, selected 2003-2006 arrangements, Fitment limitation: Confirm pump number, connector, ports, bracket, engine CPL and serial. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 3949085?

No alternate number is listed for 3949085. Send the original nameplate for an alternate-number check.

How do I confirm 3949085 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