This is a Bosch remanufactured CP3 high-pressure common-rail pump, Bosch 0986437370. It is the reman version of new Bosch 0445020300 (earlier 0445020113) and matches Cummins 5398557 (earlier 4983416). It fits the 2010-2016 Cummins ISB 6.7 midrange engine used in medium-duty trucks and buses. On this engine the CP3 is driven off the rear gear train.

Do not mix it up with Bosch 0986437334. That pump fits 2007.5-2018 Ram 2500, 3500, 4500 and 5500 trucks (Mopar 68027022AC), where the CP3 is driven from the front of the engine. The midrange pump is a rear-drive build with its own Bosch and Cummins numbers, so the two do not swap. Common reasons to replace a CP3 are low rail pressure codes, hard starting, loss of power, or metal in the fuel filters after water or dirt got into the fuel.

Specifications

Fits / Applications

• Cummins ISB 6.7 midrange (on-highway) engine with rear gear train, 2010-2016 model years
• Medium-duty trucks and buses powered by that engine (confirm by ESN and CPL)

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 for your engine, and prime the fuel system before cranking.

Part Numbers & Cross Reference

Bosch new 0445020300  ·  Bosch new (earlier) 0445020113  ·  Cummins 5398557  ·  Cummins reman 5398557RX  ·  Cummins (earlier) 4983416

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 help you confirm the exact match against your build before you order. That check is free and takes a few minutes.

Frequently Asked Questions

Will Bosch 0986437370 fit a Ram 4500 or 5500 chassis cab?

No. Ram 4500 and 5500 chassis cabs use 0986437334, where the CP3 is driven from the front of the engine. 0986437370 is the rear-drive pump for the 2010-2016 Cummins ISB 6.7 midrange engine in medium-duty trucks and buses, and the two do not swap.

What is the difference between 0986437370 and 0986437333?

Both are Bosch reman CP3s for the ISB 6.7 midrange and they look alike. 0986437333 is for 2007-2010 engines. 0986437370 is for 2010-2016 engines with the rear gear train.

Which Bosch and Cummins numbers does 0986437370 replace?

It is the reman version of new Bosch 0445020300 (earlier 0445020113) and matches Cummins 5398557 (earlier 4983416).

What do you need from me to confirm 0986437370, and does it carry a core?

Call 530-668-0818 with the engine serial number (ESN) and CPL from the engine dataplate, or the Bosch or Cummins number on your old pump. We check it at no charge before anything ships. It is remanufactured, so a refundable core charge is added at checkout and refunded once we receive the rebuildable core.

Related Parts

• 2007.5-2018 Dodge Ram 6.7L Cummins Remanufactured CP3 Injection Pump | Bosch 0 986 437 334
• Cummins ISB & QSB 6.7L Medium-Duty Injector | 0986435697 | Bosch Authorized Remanufactured by VFI
• Cummins QSB 4.5 & QSB 6.7 Tier 3 CP3 Injection Pump | Bosch 0986437310 Remanufactured

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 run our test benches. Confirm fitment with your engine serial number, VIN or build date before you order, and call us if you want help checking it, so the right part arrives the first time.