2003-2007 Cummins ISB 5.9 Midrange (Truck & Bus) CP3 Injection Pump | Bosch 0986437307 Remanufactured
This is a CP3 high-pressure common-rail pump remanufactured by Bosch, Bosch 0986437307. It is the remanufactured version of new Bosch 0445020151 (earlier 0445020015) and matches Cummins 5264245, 3965090, 3964407, 4941065, 3958073 and 4994559. It fits the 2003 to 2007 Cummins ISB 5.9 midrange engine used in medium-duty trucks and buses.
Do not mix it up with the Dodge Ram pump. A 2003 to 2007 Ram 2500 or 3500 with the 5.9L takes Bosch 0986437304 remanufactured or 0445020147 new, and catalogs list this midrange pump for commercial engines only. 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 replacement pump goes on.
Confirm Fitment Before You Order
This is the midrange ISB 5.9 truck and bus pump, not the Dodge Ram pump. Ram 2500 and 3500 trucks from 2003 to 2007 take 0986437304 or 0445020147, and 2007 to 2010 midrange ISB 6.7 engines take 0986437333. Send us the engine serial number (ESN) and CPL from the engine dataplate, or the Bosch or Cummins number on your old pump. Call 530-668-0818 and we will confirm the exact match at no charge before anything ships.
Specifications
| Part number | 0986437307 |
| Brand | Bosch |
| Condition | Remanufactured |
| Warranty | Bosch limited warranty on remanufactured units, parts only. Call us and we handle the claim. |
| Type | Bosch CP3 high-pressure common-rail pump, remanufactured by Bosch |
| Engine | Cummins ISB 5.9 midrange (truck and bus) |
| Model years | 2003 to 2007 |
| New Bosch equivalent | 0445020151 (earlier 0445020015) |
| Cummins numbers | 5264245, 3965090, 3964407, 4941065, 3958073, 4994559, 3954343 |
| Not for | Dodge Ram 2500 and 3500 (use 0986437304 or 0445020147) |
| Core charge | Refundable in full when we receive your rebuildable core |
| Shipping weight | 17 lb |
Fits / Applications
- Cummins ISB 5.9 midrange, 2003 to 2007 model years
- Medium-duty trucks and buses powered by that engine (confirm by ESN and CPL)
- Midrange engines only. Dodge Ram 2500 and 3500 pickups take 0986437304 or 0445020147
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 Cummins spec, and prime the fuel system before cranking.
Part Numbers & Cross Reference
Bosch new 0445020151 · Bosch new (earlier) 0445020015 · Cummins 5264245 · Cummins reman 5264245RX · Cummins 3965090 · Cummins 3964407 · Cummins 4941065 · Cummins 3958073 · Cummins 4994559 · Cummins 3954343
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 0986437307 fit a Dodge Ram with the 5.9L Cummins?
No. This is the pump for the midrange ISB 5.9 in medium-duty trucks and buses, and catalogs do not list it for the Ram. A 2003 to 2007 Ram 2500 or 3500 takes Bosch 0986437304 remanufactured or 0445020147 new.
What numbers does Bosch 0986437307 cross to?
New Bosch 0445020151 (earlier 0445020015) and Cummins 5264245, 3965090, 3964407, 4941065, 3958073 and 4994559. The Cummins remanufactured number is 5264245RX.
Is it new or remanufactured, and is there a core?
It is remanufactured by Bosch. A refundable core charge applies and is returned when we receive your rebuildable old pump.
How do I make sure this is the right pump for my engine?
Match the Bosch or Cummins number on your old pump, or call 530-668-0818 with the engine serial number (ESN) and CPL from the dataplate. This pump covers 2003 to 2007 midrange ISB 5.9 engines. The 2007 to 2010 midrange ISB 6.7 takes Bosch 0986437333.
Related Parts
- 2003-2007 Dodge Ram 5.9L Cummins Remanufactured CP3 Injection Pump | Bosch 0 986 437 304
- 2003-2007 Dodge Ram 2500 & 3500 5.9L Cummins CP3 Injection Pump | Bosch 0445020147 New
- Freightliner Cummins ISB 5.9 Mid-Range VP44 16X | 0470506029 | Bosch Authorized Remanufactured by VFI
- 2003-2007 Ram 5.9L Cummins Injector Connector Tube | Genuine Bosch F00RJ01572
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.
UPS Ground anywhere in the lower 48. A refundable core deposit is added at checkout and refunded in full when we receive your rebuildable core. Questions on fitment? Call 530-668-0818.
Pricing covers the unit itself. Any applicable sales tax and the refundable core charge are additional; shipping is calculated at checkout. Buying tax-exempt? Qualifying diesel repair shops, fleets, farms, and agricultural operations can purchase tax-free. Set up tax-exempt purchasing once and every qualifying order is tax-free going forward.
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