Cummins 5.9L B-Series Fuel Injector | Bosch 0432131749 | New

New OEM Bosch fuel injector (part number 0432131749) for Cummins 5.9L B-Series diesel engines. Bosch is the original equipment manufacturer for these injectors. This is a complete mechanical injector (nozzle-and-holder assembly) that replaces Cummins 3802677 and 3929490, restoring OE-spec fuel delivery and spray pattern.

Key Features:

• Genuine OEM Bosch fuel injector, Bosch number 0432131749
• Complete mechanical injector (nozzle-and-holder assembly)
• Direct replacement for Cummins 3802677 and 3929490
• Fits Cummins 5.9L B-Series engines, including industrial Case, IH, and Komatsu applications using the Cummins B
• Restores OE-spec fuel atomization and spray pattern

Specifications:

• Base part number: 0432131749 (Bosch)
• Component type: Complete mechanical diesel fuel injector (nozzle + holder)
• Condition: New — OEM (Bosch)
• Engine make: Cummins
• Engine models: 5.9L B-Series
• Cummins references: 3802677, 3929490

Compatibility / Fitment:

• Fits Cummins 5.9L B-Series diesel engines (Tier 1 mechanical applications)
• Also used in industrial equipment with the Cummins B engine — including Case, International Harvester, and Komatsu
• Complete injector — includes the nozzle and holder; installs into the injector bore
• Verify by engine model and your Cummins injector number (3802677) before ordering
• Reman exchange versions exist (3802677RX) — this is a new unit; install with a new heat shield/sealing washer as needed
• These engines use one injector per cylinder — order to match your cylinder count

Conclusion:

The Bosch 0432131749 is a new genuine OEM fuel injector for Cummins 5.9L B-Series diesel engines, replacing Cummins 3802677 and 3929490. As a complete mechanical injector assembly, it restores factory-spec fuel delivery for dependable operation. Verify your engine and Cummins injector number before ordering.