Excavator Engine Parts

3904409 Valve Stem Guide for Cummins 4B and 6B Engines

Q: What numbers are documented for 3904409?

Primary Part Number: 3904409. Source Catalog Reference - Relationship Unclassified: 3904408. Source Catalog Reference - Relationship Unclassified: 6BT5.9. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 3904409 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.

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OEM / reference3904409

SpecificationValve Stem Guide

Catalog ID53743035

3904409 is retained from the exact EexcavaStart product archive as a valve stem guide. The source record and referenced catalogs support lookup and preliminary application review, but connector, mounting, dimensions and machine serial range must be compared with the original component before ordering.

Product Type: Valve Stem Guide
Condition: New replacement part

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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 Part Number	Exact retained source reference	3904409
Source Catalog Reference - Relationship Unclassified	Retained for lookup; direct interchange is not asserted	3904408
Source Catalog Reference - Relationship Unclassified	Retained for lookup; direct interchange is not asserted	6BT5.9

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

3904409

Other documented relationship

3904408
6BT5.9

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

Product summary

Valve Stem Guide

Category: Excavator Engine Parts
Catalog ID: 53743035
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

2 model references

Supported engine families: Cummins 4B / 6B / 6BT / 6BTA
Fitment limitation: Confirm guide outside diameter and engine CPL

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 3904409

Which machines use 3904409?

Recorded compatible model references include Supported engine families: Cummins 4B / 6B / 6BT / 6BTA, Fitment limitation: Confirm guide outside diameter and engine CPL. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 3904409?

No alternate number is listed for 3904409. Send the original nameplate for an alternate-number check.

How do I confirm 3904409 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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