Excavator Engine Parts

3974324 / 3974326 Oil Cooler Cover and Filter Head for Cummins QSL9 QSC8.3

Q: What numbers are documented for 3974324?

Primary Cummins Part Number: 3974324. Associated Component Number: 3974326. Published Superseding Number: 5450366. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 3974324 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.

3974324 / 3974326 Oil Cooler Cover and Filter Head for Cummins QSL9 QSC8.3, OEM/reference 3974324, Oil Cooler Cover and Filter Head Assembly, product view 1

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OEM / reference3974324

SpecificationOil Cooler Cover and Filter Head Assembly

Catalog ID51051166

Lubricating-oil cooler cover and associated filter-head assembly identified by Cummins 3974324 and 3974326. Published QSL9/QSC8.3 records separate the two numbers by component, so they are not presented as interchangeable. Confirm the engine CPL and complete casting numbers.

Product Type: Oil Cooler Cover and Filter Head Assembly
Product Brand: EexcavaStart
System: Engine lubrication and oil cooling
Electrical Rating: Not applicable
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 Cummins Part Number	Lubricating-oil cooler cover	3974324
Associated Component Number	Lubricating-oil filter head; not an interchange	3974326
Published Superseding Number	Current service replacement for 3974326	5450366

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

3974324

Other documented relationship

3974326
5450366

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

Product summary

Oil Cooler Cover and Filter Head Assembly

Category: Excavator Engine Parts
Catalog ID: 51051166
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

2 model references

Published engine families: Cummins QSL9 / QSC8.3 / ISC8.3
Fitment limitation: Confirm engine CPL, casting number and oil-port layout

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 3974324

Which machines use 3974324?

Recorded compatible model references include Published engine families: Cummins QSL9 / QSC8.3 / ISC8.3, Fitment limitation: Confirm engine CPL, casting number and oil-port layout. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 3974324?

No alternate number is listed for 3974324. Send the original nameplate for an alternate-number check.

How do I confirm 3974324 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.

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