Description
Description
Premium 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 this premium set is rebuilt using high-quality OEM Bosch components, precision calibrated, ultrasonically cleaned, and flow tested to ensure optimal fuel delivery and balanced cylinder performance. Every injector undergoes extensive quality control testing before shipment to meet or exceed OEM specifications.
This premium injector set is engineered to:
- Restore factory fuel delivery performance
- Improve horsepower and throttle response
- Reduce excessive smoke and rough idle conditions
- Eliminate injector balance and fueling issues
- Deliver consistent fuel flow across all six cylinders
- Support improved fuel economy and combustion efficiency
Replacing all six injectors as a matched premium set helps maintain proper cylinder balance, smoother engine operation, and maximum reliability under towing, daily driving, and heavy-duty applications.
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:
- Heavy-duty towing applications
- Commercial work trucks
- Agricultural operations
- Fleet vehicles
- Performance-oriented diesel builds
- Daily-driven diesel pickups
Need Fitment Confirmation?
📞 Call or text (909) 639-4195
Have your VIN or engine serial number ready and we’ll confirm the correct premium injector set before you order.
When your truck is down, speed matters. We verify fast and ship fast.
Why Choose This Premium Injector Set?
- Premium Bosch remanufactured quality
- Precision matched set for balanced cylinder performance
- Calibrated and tested to OEM specifications
- Fully bench-tested for pressure, leakage, and fuel delivery
- Restores power, fuel efficiency, and smooth engine operation
- Designed for demanding towing and work-truck applications
- Built for long-term diesel reliability
- Engineered for maximum uptime and performance
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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