Part number lookup
3978040 Replacement Parts
Cross-reference and compare 1 replacement listing for OEM / aftermarket part number 3978040. Use this part-number page — not a generic equipment or brand hub — to review price, availability, and fitment before ordering.
1 Matching Product
Part Numbers and Cross References
Applications and Fitment Summary
- Cummins · Fit for Engine Cummins ISB, ISBE 150.30, IISBE4.5E5, ISB4.5E5160, ISB4.5E5185, ISB4.5E5207, ISBE, ISBE 170.30, ISBE4, ISLE, 6ISBE6.7, QSB, ISB4, ISB4.5, ISB6.7
Frequently Asked Questions
What parts replace OEM number 3978040?
This page lists 1 replacement listing indexed under 3978040. Compare cross references, applications, and pricing before ordering.
How do I confirm fitment for 3978040?
Match the stamped part number first, then verify machine model, engine code, serial number, mounting points, and photos of your old part before checkout.
Can I request a quote if 3978040 is not an exact match?
Yes. Use the fitment inquiry form with your machine plate, engine model, and photos. Support can review alternatives or cross references.