Fleece Performance Fuel Injection Pump

Fleece Performance Fuel Injection Pumps: Engineered for Serious Diesel Power

When diesel enthusiasts need reliable high-pressure fuel delivery to match an aggressive build, Fleece Performance Engineering is one of the most respected names in the game. Fleece Performance Engineering is a customer-centric diesel performance company that specializes in the development and manufacturing of innovative products to improve upon the performance and reliability of Cummins, Duramax, and Powerstroke engines — a company that originally operated from a shop on their family farm and has since grown into a full-scale operation. Their fuel injection pump lineup is a cornerstone of that mission, purpose-built for diesel owners who demand more from their fuel systems.

The PowerFlo CP3 and CP3K Lineup

Fleece's injection pump catalog centers on the Bosch CP3 high-pressure common rail pump platform, with purpose-engineered variants to cover a wide range of applications and power goals. Their lineup includes the PowerFlo® 750 CP3 for GM Duramax, the PowerFlo® 750 CP3 for 5.9L Cummins, the PowerFlo® 750 CP3 for 6.7L Cummins, and CP3K variants for both Duramax and Cummins (5.9L and 6.7L) applications.

A stock CP3 pump loses fuel flow and rail pressure after 3,000 RPM — directly translating to lost horsepower when you need it most. Fleece's PowerFlo 750 upgrade maintains desired fuel rail pressure through the entire RPM range while providing enough fuel to support 750 RWHP. For the most demanding builds, the PowerFlo 1000 CP3 Injection Pump is engineered to support up to 1,000+ RWHP.

Built New — No Core Charge

One of the most meaningful differentiators in Fleece's injection pump offering is their commitment to using all-new components. Fleece builds their pumps from brand-new CP3s, which means no core charge and no used parts. This matters not just for your wallet, but for long-term reliability — you're not inheriting the wear history of a previously cycled pump.

Every Fleece Performance CP3 is tested on their in-house engine simulator and pump test stand to simulate real-world situations and ensure that each pump is ready to perform. This level of quality control is rarely found at this price point in the diesel aftermarket and is a direct reflection of Fleece's engineering-first culture.

Application Coverage: Cummins, Duramax, and More

Fleece's CP3 injection pumps span an extensive range of Cummins applications, from the 1989–1998 5.9L 12V through the modern 2019–2024 6.7L 24V, as well as multiple Duramax generations. Whether you're building a street truck, a competition sled puller, or a high-output daily driver, there is a Fleece injection pump calibrated for your platform and power target.

For the most extreme builds, Fleece also offers dual pump CP3 injection setups designed to maximize fuel delivery in twin CP3 configurations for high-performance diesel applications.

Why Choose Fleece for Your Fuel Injection Pump?

• All-new construction — no cores, no used internals, no inherited wear
• Dyno and simulator tested — every pump validated before it ships
• Broad platform coverage — Cummins 5.9L & 6.7L, GM Duramax LB7 through LMM and beyond
• Scalable power support — from street-friendly CP3K upgrades to 1,000+ RWHP PowerFlo builds
• Industry reputation — Fleece Performance Engineering is a leading manufacturer of aftermarket diesel performance products, recognized for innovation, quality, and service.

If you're ready to ensure your diesel never runs out of fuel when it matters most, Fleece Performance's injection pump lineup is a proven foundation for any serious build. Browse the full Fuel Injection Pump category or explore everything Fleece Performance Engineering has to offer.