Bosch Remanufactured CP3 Injection Pump — 2003-2007 Dodge Ram 5.9L Cummins
Factory-remanufactured by Bosch for the 3rd-generation Dodge Ram with the 5.9L Cummins ISB common rail engine. This is the same pump the dealer installs — built on the same Bosch production line with the same quality standards.
What’s Included
- Bosch remanufactured CP3 injection pump
- New fuel pressure regulator (MPROP/metering unit)
- Mounting O-ring and necessary gaskets
Specifications
| Pump Type | Bosch CP3 (Common Rail 3rd Generation) |
| Bosch Part # | 0 986 437 304 |
| OEM Cross-Reference | 0 445 020 011, 0 445 020 039, 0 445 020 147, Mopar R5143425AA, 5143425AA, Cummins 3972814, 4941064 |
| Max Pressure | 23,000 PSI (1,600 bar) |
| Condition | Bosch Remanufactured — OEM certified |
| Weight | ~19 lbs |
Vehicle Fitment
- 2003 Dodge Ram 2500/3500 5.9L Cummins ISB (early common rail)
- 2004 Dodge Ram 2500/3500 5.9L Cummins ISB
- 2004.5 Dodge Ram 2500/3500 5.9L Cummins ISB (325HP)
- 2005 Dodge Ram 2500/3500 5.9L Cummins ISB
- 2006 Dodge Ram 2500/3500 5.9L Cummins ISB
- 2007 Dodge Ram 2500/3500 5.9L Cummins ISB
Why Choose Bosch Reman Over Aftermarket?
Every Bosch remanufactured CP3 is completely disassembled, cleaned, inspected, and rebuilt with new seals and re-certified components on the same production equipment used for new pumps. The 5.9L Cummins CP3 is one of the most commonly replaced diesel injection pumps — don’t risk a cheap rebuild that fails in 6 months.
About Valley Fuel Injection
We’re a Bosch-authorized, Alliant Power dealer with 45+ years of diesel fuel injection experience. We test and rebuild injection pumps on Bosch-calibrated equipment daily. Need help diagnosing a CP3 issue? Call us at (530) 668-0818.





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