BOSCH New CP3 Injection Pump, No Core Charge
Fits 2003-2007 Dodge Ram 5.9L Cummins Diesel
Stock Fuel Flow
Upgrade your Dodge Ram 5.9L Cummins with the Bosch New CP3 Injection Pump, the industry benchmark for common rail diesel performance. Engineered by Bosch, a world leader in fuel injection technology, this genuine OEM injection pump is a direct replacement for 2003-2007 Dodge Ram 2500 and 3500 models. Restore your truck’s power, reliability, and efficiency with confidence.
OEM Bosch Quality: 100% brand new—never remanufactured—ensuring the highest quality and integrity.
Direct Fit: Designed exclusively for 2003–2007 Dodge Ram 5.9L Cummins engines for hassle-free installation and seamless compatibility.
Maximum Durability: Known for long service life with robust internal components capable of handling decades of heavy-duty use.
Superior Fuel Delivery:
Consistently maintains proper rail pressure for efficient combustion.
Delivers the fuel flow needed for both factory and mildly modified trucks.
Smoother throttle response and improved overall drivability.
Complete New Assembly: Every part is factory-new, providing unmatched peace of mind and no core charge requirement.
| Attribute | Details |
|---|---|
| Manufacturer | Bosch |
| Compatibility | 2003-2007 Dodge Ram 5.9L Cummins Diesel |
| Part Numbers | 0 445 020 147, 0 986 437 304 |
| Warranty | Up to 3 years, unlimited mileage |
| Fuel Pressure | Up to 24,000–26,000 psi |
| Typical Flow Rate | 60–160 gallons per hour |
| Origin | 100% brand new, never remanufactured |
| Fitment | Direct bolt-on installation |
Trusted by Professionals: Used as original equipment by Dodge and Cummins—chosen for unmatched reliability.
Proven Technology: Durable rotary three-cylinder design ensures precise, high-pressure fuel delivery under all conditions.
Performance Ready: Supports fueling needs for up to approximately 550hp at the wheels when used with stock or lightly modified setups.
Dodge Ram 2500 5.9L Cummins Diesel (2003–2007)
Dodge Ram 3500 5.9L Cummins Diesel (2003–2007)
This Bosch CP3 injection pump is engineered as a direct replacement, with no modifications required. Fits all 5.9L Cummins common rail engines from 2003 through 2007 in both Dodge Ram 2500 and 3500 applications. Professional installation is recommended for peak performance and reliability.
Enjoy long-term confidence with a manufacturer’s warranty of up to 3 years and unlimited mileage (warranty specific to new OEM Bosch pumps).
Replace your worn, failing, or underperforming pump with the diesel industry’s most trusted name. Restore your Dodge Ram’s original power, fuel efficiency, and dependability with a genuine Bosch New CP3 Injection Pump—the ultimate solution for 5.9L Cummins engines.
Order today from NorCal Diesel Performance for fast shipping, expert support, and authentic Bosch quality.
No core charge required—this is a 100% new pump purchase.
| 0 445 020 011 | 3964747 | 5264246 |
| 0 445 020 039 | 3964748 | 5264246NX |
| 0 445 020 147 | 3972814 | 5264246RX |
| 0 986 437 304 | 3972814NX | DA2251046 |
| 445020011 | 3972815 | R5104877AA |
| 445020039 | 4941064 | R5143425AA |
| 445020147 | 4994560 | R5191780AA |
| 986437304 | 5104877AA | R5191780AB |
| 3957162 | 5143425AA | R5191780AC |
| 3964009 | 5191780AB | R5191780AD |
| 3964009NX | 5191780AC |
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