Part number lookup
Cummins4B3.9 Replacement Parts
Cross-reference and compare 1 replacement listing for OEM / aftermarket part number Cummins4B3.9. 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
- Part Number
- Cummins · Cummins ISC ISB M923 M931 M936 M925 M939 Truck
Frequently Asked Questions
What parts replace OEM number Cummins4B3.9?
This page lists 1 replacement listing indexed under Cummins4B3.9. Compare cross references, applications, and pricing before ordering.
How do I confirm fitment for Cummins4B3.9?
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 Cummins4B3.9 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.