Part number lookup
5257939 Replacement Parts
Cross-reference and compare 3 replacement listings for OEM / aftermarket part number 5257939. Use this part-number page — not a generic equipment or brand hub — to review price, availability, and fitment before ordering.
3 Matching Products
Part Numbers and Cross References
Applications and Fitment Summary
- Cummins · s: For Cummins Engine
- Part Number
- Cummins Engine
- Cummins Engine B6.7S B4.5 Air Brake Compressor 3977147
- Cummins Engine B6.7S B4.5
Frequently Asked Questions
What parts replace OEM number 5257939?
This page lists 3 replacement listings indexed under 5257939. Compare cross references, applications, and pricing before ordering.
How do I confirm fitment for 5257939?
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 5257939 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.