Upgrade to decisive, real-world power with the Fleece Performance PowerFlo 750 CP3 for the 5.9L Cummins. Built for 2003–2007 Dodge Ram 2500/3500 5.9L 24V applications, this CP3 upgrade delivers a proven path to up to 750 RWHP when paired with the right supporting upgrades. It’s a straightforward, cost‑effective way to push past the fuel‑flow limits that bottleneck stock systems, especially as RPM climbs.

The key problem it solves is simple: stock CP3 pumps can struggle to maintain fuel flow and rail pressure once you push past 3,000 RPM. That restriction translates to horsepower fade at the moment you demand peak performance. The PowerFlo 750 uses a 6.7L Cummins 10mm CP3 pump design to maintain consistent fuel pressure across the entire RPM range, ensuring you don’t lose power when it’s most needed. This upgrade doesn’t just add horsepower on paper—it stabilizes fuel delivery, improves throttle response, and preserves power during high‑demand driving scenarios.

What makes PowerFlo 750 stand out

• Maintains rail pressure through redline: eliminates the 3,000 RPM fuel flow drop common with stock CP3 units, keeping power available where you want it.
• Direct fitment for 5.9L builds: designed specifically for the 2003–2007 5.9L Cummins platform with the necessary fittings and lines to support higher fuel flow.
• Clear path to 750 RWHP: a reliable upgrade when combined with appropriate supporting components (tuning, injectors, turbo, exhaust, etc.).
• Kit‑level convenience: everything you need is included to simplify installation and ensure proper fuel delivery.
• Solid warranty: backed by a 1 Year Limited Parts Warranty for confidence in your build.

Kit Includes

• 6.7L Cummins 10mm CP3 Pump
• 1/2" CP3 Feed Fitting
• 3/8" CP3 Feed Fitting
• 6.7L CP3 to 5.9 High Pressure Rail Line
• 3/8" Fuel Line and Hose Clamps

Who this upgrade is for

• Performance enthusiasts aiming for up to 750 RWHP with the right combination of fuel, turbo, and tuning
• Owners who tow or haul regularly and want consistent power delivery across the RPM range
• Builds looking to eliminate fuel flow restrictions inherent to stock CP3 systems

Why it matters for your build

With the PowerFlo 750, you’re not just chasing peak horsepower—you’re chasing reliable, linear power. Expect improved throttle response, steadier boost pressure, and a more predictable power curve when climbing hills, accelerating onto highways, or pulling heavy loads. This upgrade minimizes the risk of lean conditions or power drops at critical moments, helping you achieve a more confident driving experience.

Fitment and usage

Designed for the 2003–2007 Dodge Ram 2500/3500 with the 5.9L 24V Cummins engine. Suitable for new builds or as an upgrade to existing CP3 setups where high‑RPM fuel delivery is a limiting factor. For best results, pair this CP3 upgrade with appropriate fuel system components, proper tuning, and supporting performance parts to realize the full 750 RWHP potential.

Warranty

Powered by a 1 Year Limited Parts Warranty, giving you confidence as you push your 5.9L Cummins toward higher performance levels.