Description
Description
Remanufactured Bosch fuel injector set (6 injectors) for 2003–2004.5 Dodge Ram 2500 and 3500 trucks equipped with the Cummins 5.9L Common Rail diesel engine.
Each injector in the set is professionally remanufactured using OEM Bosch components, ultrasonically cleaned, calibrated, and flow tested to meet original equipment specifications. Every injector is thoroughly inspected and verified before shipping to ensure balanced fuel delivery, reliable performance, and long service life.
This injector set is engineered to:
- Restore precise fuel atomization
- Improve horsepower and throttle response
- Reduce excessive smoke and rough idle conditions
- Eliminate injector balance and fuel delivery issues
- Support consistent fuel flow across all six cylinders
Replacing all six injectors as a matched set helps maintain proper cylinder balance, smoother engine operation, improved fuel economy, and dependable long-term performance.
This set replaces OEM Bosch injector part number 0986435503 and compatible Cummins references. Fitment is verified before shipment.
Common Cross References
- 0986435503
- 0 986 435 503
- R0986435503
- 0445120007
- 0445120008
- 3948529
- 3957077
- 5010477859
(Exact injectors supplied depend on engine serial number and application — fitment is verified before shipping.)
Compatible Engines
- Cummins 5.9L ISB Common Rail
- 2003–2004.5 Dodge Ram Cummins Applications
Commonly installed in:
- Dodge Ram 2500 5.9 Cummins
- Dodge Ram 3500 5.9 Cummins
Commonly used in:
- Daily-driven diesel pickups
- Towing applications
- Commercial work trucks
- Agricultural operations
- Fleet vehicles
Need Fitment Confirmation?
📞 Call or text (909) 639-4195
Have your VIN or engine serial number ready and we’ll confirm the correct injector set before you order.
When your truck is down, speed matters. We verify fast and ship fast.
Why Choose This Injector Set?
- Genuine Bosch remanufactured quality
- Calibrated and tested to OEM specifications
- Fully bench-tested for pressure, leakage, and performance
- Restores power, fuel efficiency, and smooth engine operation
- Balanced injector set for consistent cylinder performance
- Built for long-term diesel reliability
- Engineered for maximum uptime in demanding applications
Core Policy
A core refund is available when your old injectors are returned.
Cores must be received within 30 days of purchase to qualify.
Shipping & Support
- Free UPS Ground shipping
- Expedited shipping available
- Backed by direct Samperio Turbo Rebuild technical support
You’ll speak to diesel fuel system specialists, not call centers. Reliable support from people who understand Cummins common rail fuel systems and the importance of keeping your truck on the road.




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