This is a new Bosch CP3 high-pressure common-rail pump, Bosch 0445020147. It is the pump for the 5.9L Cummins in 2003 to 2007 Dodge Ram 2500 and 3500 trucks, and this one number covers every common-rail 5.9L year. It replaces earlier Bosch numbers 0445020039 and 0445020011 and matches Cummins 5264246, 3972814, 3972815 and 4941064 and Mopar 5191780AD, 5143425AA and 5104877AA. It is a new pump, not a rebuild. The Bosch remanufactured version of the same pump is 0986437304.

Common reasons to replace a CP3 are low rail pressure codes, hard starting, loss of power under load, or metal in the fuel filters. Water or dirt in the fuel is the usual root cause, so fix that before the new pump goes on. This pump does not fit the 6.7L Cummins, which takes Bosch 0445020146. It is also not the pump for the midrange ISB 5.9 used in medium-duty trucks and buses, which has its own Bosch numbers.

Specifications

Fits / Applications

• Dodge Ram 2500 and 3500 5.9L, 2003 to 2007, Cummins common-rail engine
• One pump number covers every common-rail 5.9L year, 2003 through 2007
• 5.9L only. The 6.7L, 2007.5 and newer, takes 0445020146

Replace the fuel filters and check fuel supply to the pump before fitting. If the old pump left metal in the filters, clean the tank, lines and rail and check the injectors, or the debris will damage the new pump. Move the drive gear over from the old pump if the replacement comes without one, torque the gear nut to the service manual spec, and prime the fuel system before cranking.

Part Numbers & Cross Reference

Bosch remanufactured version 0986437304  ·  Bosch new (earlier) 0445020039  ·  Bosch new (earlier) 0445020011  ·  Cummins 5264246  ·  Cummins 3972814  ·  Cummins 3972815  ·  Cummins 4941064  ·  Mopar 5191780AD  ·  Mopar 5143425AA  ·  Mopar 5104877AA  ·  Mopar reman R5191780AD

Cross-reference numbers can change with engine serial, build year and emissions tier, so treat this list as a starting point. Send us your engine serial number and we will confirm the exact match against your build before anything ships. That check is free and takes a few minutes.

Frequently Asked Questions

Will Bosch 0445020147 fit a 2007 Ram with the 6.7L Cummins?

No. This pump is for the 5.9L common-rail Cummins in 2003 to 2007 Dodge Ram 2500 and 3500 trucks. The 6.7L, 2007.5 to 2018, takes Bosch 0445020146.

What numbers does Bosch 0445020147 replace?

Earlier Bosch 0445020039 and 0445020011, Cummins 5264246, 3972814, 3972815 and 4941064, and Mopar 5191780AD, 5143425AA and 5104877AA. The Bosch remanufactured version of the same pump is 0986437304.

Is this pump new or remanufactured, and is there a core?

It is a new Bosch pump, not a rebuild, so there is no core to send back. The Bosch remanufactured version, 0986437304, is listed separately and carries a refundable core.

Is this the same CP3 used on a medium-duty truck or bus with the ISB 5.9?

No. The midrange ISB 5.9 in medium-duty trucks and buses takes a different CP3, Bosch 0445020151 new or 0986437307 remanufactured, and catalogs do not list that pump for the Ram. Call 530-668-0818 with the number on your old pump if you are not sure.

Related Parts

• 2003-2007 Dodge Ram 5.9L Cummins Remanufactured CP3 Injection Pump | Bosch 0 986 437 304
• Dodge Ram 5.9L 12-Valve Cummins VE Injection Pump 0460426184 | Bosch Authorized Remanufactured by VFI
• 2003-2007 Cummins ISB 5.9 Midrange (Truck & Bus) CP3 Injection Pump | Bosch 0986437307 Remanufactured
• 2003-2007 Dodge Ram 2500 & 3500 5.9L Cummins Fuel Rail | Bosch 0445226014 New

Why Buy From Valley Fuel Injection

We are a diesel fuel-injection and turbocharger shop in Woodland, CA, rebuilding pumps, injectors and turbos on our own benches since 1993, not a drop-ship storefront. When you call, you talk to the people who test these units. We verify fitment against your engine serial, VIN or build date before anything ships, so the right part arrives the first time.