FLEECE FPE-CUMM-CP3-10MM-5.9 5.9L CUMMINS POWERFLO 750

Unlock serious horsepower from your 2003–2007 5.9L Cummins with the FLEECE FPE-CUMM-CP3-10MM-5.9 5.9L CUMMINS POWERFLO 750. This 10mm stroker CP3 is a straight-forward, no-inflated-numbers upgrade proven to support up to 750 RWHP with the right turbo, injectors, and tuning. It also eliminates the factory fuel flow restriction that starts around 3,000 RPM, keeping rail pressure where your tuner wants it even when you’re on the big end of the pull or pass. Fleece PowerFlo 750 CP3, FPE-CUMM-CP3-10MM-5.9, 10mm stroker CP3 5.9 Cummins, 750 RWHP CP3 pump, 2003 2004 2005 2006 2007 Dodge Ram 5.9L, common rail Cummins fuel system upgrade, CPP Diesel Fleece Performance

Every PowerFlo 750 is built from a brand-new Bosch CP3 and validated on Fleece’s in-house engine simulator and pump test stand to replicate real-world load, RPM, and pressure demands. If you’re out-running a stock pump—or planning to—this is the “no B.S.” solution that actually feeds what your tune is commanding instead of letting rail pressure nose-dive when it matters most.

Key benefits

• Proven to support up to ~750 RWHP with proper supporting mods
• Eliminates factory fuel flow restriction that begins around 3,000 RPM
• Maintains desired rail pressure across the entire RPM range
• Built from a brand-new Bosch CP3 – no core charge or return
• Tested on Fleece’s engine simulator and pump stand before it leaves the shop

Fitment

Engine: 5.9L Cummins 24V common rail
Vehicles: 2003, 2004, 2005, 2006, 2007 Dodge Ram 2500/3500 with 5.9L Cummins
Intended use: Street performance, towing, competition builds up to ~750 RWHP with appropriate turbo and injectors
Notes: Direct-fit CP3 replacement; requires adequate lift pump supply and custom tuning for best results.

What’s included

• 6.7L Cummins 10mm CP3 pump (PowerFlo 750)
• 1/2" CP3 feed fitting
• 3/8" CP3 feed fitting
• 6.7L CP3 to 5.9L high-pressure rail line
• 3/8" fuel line and hose clamps

Cross-reference / Interchange

This PowerFlo 750 replaces the following OE and reman part numbers:

• Bosch: 0445020039, 0445020147, 0986437304
• Mopar: 5104877AA, 5143425AA, R5104877AA, R5143425AA, R5191780AA

Related Fleece upgrades on CPP Diesel

• FLEECE FPE-CUMM-CP3K-5.9 5.9L CUMMINS CP3K – modified CP3K pump to eliminate high-RPM flow restriction.
• FLEECE FPE-CUMM-CP3-10MM-6.7 6.7L CUMMINS POWERFLO 750 – PowerFlo 750 option for 2007.5–2018 6.7L Cummins.
• FLEECE FPE-CP3-FEED 1/2 INCH CP3 FEED FITTING – high-flow feed fitting to keep the pump supplied.
• FLEECE FPE-CP3-RTRN 3/8 INCH CP3 RETURN FITTING – stainless return fitting for clean, unrestricted return flow.
• FLEECE FPE-CP3X2 2003-2016 CUMMINS CP3X2 HARNESS – ECM-controlled harness for dual CP3 setups.

With proper tuning, turbocharger, and injector sizing, the PowerFlo 750 is proven to support up to ~750 RWHP on 5.9L Cummins applications. Many builds use this pump as the main supply for 600–750 RWHP street and tow rigs.

Injector size should match your horsepower goal, truck use, and tuning strategy. Ultimately, commanded main injection duration (pulse width) determines how much injector a CP3 can support. The PowerFlo 750 comfortably supports common 100 HP injector sets at reasonable durations when the turbo and tune are matched correctly.

For most 600–750 RWHP builds, a single PowerFlo 750 with the right lift pump is sufficient. Dual CP3s (with parts like the FPE-CP3X2 harness and Fleece dual-pump hardware) are typically reserved for aggressive competition trucks or 800+ RWHP goals.

Yes. A key benefit of the PowerFlo 750 is eliminating the factory fuel flow restriction that begins around 3,000 RPM, allowing the pump to maintain commanded rail pressure where a stock CP3 usually falls off.

The PowerFlo 750 is built from a brand-new Bosch CP3, not a reman, and carries a limited parts warranty from Fleece. There is no core charge or core return required.

Yes. This product carries a California Proposition 65 warning for Cancer and Reproductive Harm. See the Prop 65 row in the Specifications table and visit www.P65Warnings.ca.gov for more information.

Specifications for FLEECE FPE-CUMM-CP3-10MM-5.9