Part number lookup
B129B Replacement Parts
Cross-reference and compare 4 replacement listings for OEM / aftermarket part number B129B. Use this part-number page — not a generic equipment or brand hub — to review price, availability, and fitment before ordering.
4 Matching Products
Part Numbers and Cross References
Applications and Fitment Summary
- BRAND
- Cummins
- Cummins · s : Cummins Engine: 4B, 4BT, 4BTA, 6B, 6BT, 6BTA, 4B3.9, B5.9, 6B5.9, B4.5, ISB6.7, B129B
- Cummins · s : Cummins Engines: 4B3.9, B5.9, 6B5.9, B4.5, ISB 6.7, B129B
- Part Number
- Cummins · s : Cummins 4B3.9, B5.9, 6B5.9, B4.5, ISB6.7, B129B
Frequently Asked Questions
What parts replace OEM number B129B?
This page lists 4 replacement listings indexed under B129B. Compare cross references, applications, and pricing before ordering.
How do I confirm fitment for B129B?
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 B129B 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.