Engineered specifically for 2003 through 2007 Dodge Ram 2500 and 3500 trucks equipped with the 5.9L 24-valve common-rail Cummins turbo diesel engine, the Fleece Performance PowerFlo 750 10mm Stroker CP3 Fuel Injection Pump Kit (FPE-CUMM-CP3-10MM-5.9) delivers dependable high-pressure fuel delivery without inflated power claims. On factory 5.9L CP3 pumps, internal fluid restrictions cause delivery volume to taper off dramatically past 3,000 RPM. When running aggressive street tuning, upgraded injectors, or larger single/compound turbochargers, this restriction causes severe rail pressure drops right when the engine demands fuel the most.

The PowerFlo 750 is built starting from a 100% brand-new Bosch 6.7L-based CP3 pump outfitted with an enlarged 10mm stroker camshaft and precision pumping elements. Rather than just selling a bare pump and leaving the customer to source conversion parts, Fleece includes a custom pre-bent high-pressure rail line and quick-connect fuel supply fittings designed specifically to bridge the 6.7L pump body directly onto the 5.9L engine block and fuel rail. Tested on in-house engine simulators and automated test stands, this pump eliminates the 3,000 RPM bottleneck and comfortably sustains commanded fuel pressure for builds producing up to 750 rear-wheel horsepower.

Key Features & Benefits

• Proven 750 RWHP Support: Supplies the high-pressure fuel volume required to maintain rock-solid rail pressure on performance street, towing, and competition setups up to 750 rear-wheel horsepower.
• Eliminates High-RPM Restriction: Flow-modified internal architecture removes the factory flow choke that causes stock pumps to lose rail pressure past 3,000 RPM.
• 100% Brand-New Bosch Pump Base: Built from a brand-new 6.7L Cummins CP3 platform—not a used or remanufactured core—ensuring zero fatigue and no core return requirement.
• Complete Drop-In Conversion Package: Includes a custom high-pressure rail line, 1/2" and 3/8" feed fittings, and fuel hose to adapt the side-port 6.7L pump directly to the 5.9L fuel rail seamlessly.
• Simulated & Calibrated: Every single pump is validated on Fleece's automated pump test stand and engine simulator before packaging to verify exact delivery across all three pumping chambers.

Technical Specifications

• Manufacturer / Brand: Fleece Performance Engineering
• Manufacturer Part Number / SKU: FPE-CUMM-CP3-10MM-5.9 / FPE-CUMM-CP3-10MM-5-9
• Pump Base Architecture: Genuine Brand-New Bosch 6.7L Cummins High-Pressure CP3 Platform
• Pump Stroke / Displacement: 10mm Stroker Assembly
• Horsepower Rating: Proven 750 Rear-Wheel Horsepower (RWHP)
• Kit Contents:
  • Brand-New 10mm Stroker CP3 Injection Pump
  • Custom 6.7L CP3 to 5.9L High-Pressure Fuel Rail Line
  • 1/2" CP3 Feed Fitting
  • 3/8" CP3 Feed Fitting
  • 3/8" Low-Pressure Fuel Line & Constant-Tension Hose Clamps
• Truck Platform: 2003–2007 Dodge Ram 2500 & 3500
• Engine Platform: 5.9L 24V Cummins Common-Rail Turbo Diesel
• Core Requirement: None
• Warranty: Fleece Performance Engineering Limited Warranty

Vehicle Fitment & Installation Notes

• 2003–2007 Dodge Ram 2500 – 5.9L Cummins 24V Common-Rail Diesel
• 2003–2007 Dodge Ram 3500 – 5.9L Cummins 24V Common-Rail Diesel
• Fits Model Years: 2003, 2004, 2004.5, 2005, 2006, 2007
• Fitment Notice: Engineered specifically to convert a 2003–2007 5.9L Cummins truck to the higher-volume 6.7L CP3 architecture. The included high-pressure hard line replaces the factory 5.9L pump-to-rail tube to accommodate the 6.7L pump's side discharge port location.
• Fuel Supply Requirement: To support 750 RWHP and protect the 10mm stroker plungers from starvation cavitation, an aftermarket electric lift pump system rated at 150 to 165 GPH or higher (such as FASS Titanium or AirDog II-5G) is mandatory.
• Tuning Requirement: Custom ECM calibration (EFI Live, HP Tuners, or Smarty Touch) is required to calibrate fuel delivery scaling, pulse width, and Fuel Control Actuator (FCA) duty cycles.