Exergy Fuel Injection Pump

Exergy Fuel Injection Pumps: OE Expertise Meets High-Performance Engineering

When it comes to high-pressure fuel delivery in performance diesel applications, few names carry the weight of Exergy Performance. Exergy Performance is a division of Exergy Engineering — a company whose roots trace back to 1944 as a former department of General Motors producing mechanical unit injectors for the Detroit Diesel Corporation. That heritage of OE-level manufacturing discipline is the foundation upon which every Exergy fuel injection pump is built.

What separates Exergy from the crowded aftermarket pump space is their background in original equipment diesel fuel system development and validation. Rather than simply modifying off-the-shelf components, Exergy leverages decades of engineering experience and first-rate Bosch test equipment to design, assemble, and verify every pump they produce. Each unit is bench tested after assembly to a rigorous standard — ensuring consistent, repeatable fuel delivery from idle to full power.

The Exergy Pump Lineup: From Street to Strip

Exergy offers a tiered range of fuel injection pumps to match builds ranging from weekend towers to all-out race rigs. Their pump lineup covers Cummins, Duramax, and Power Stroke platforms:

• Sportsman CP3 Pump — Built on a brand-new, platform-specific Bosch CP3 foundation, the Sportsman series is engineered to extend fueling capabilities up to 4,500 RPM and support up to 650 horsepower. It is a direct bolt-in replacement requiring no core return, making it one of the most accessible performance upgrades available for diesel owners.
• 10mm Stroker CP3 Pump — Exergy's 10mm Stroker is designed for builds demanding serious fuel volume. The Duramax version is engineered to support up to 800 RWHP, replacing the stock pump in the factory location without modification. It was developed with both performance and durability in mind.
• 14mm Stroker CP3 Pump (Race Series) — For extreme applications, Exergy's 14mm Race Series CP3 pump — built on a 6.7 Cummins platform — is capable of supporting 1,200+ horsepower in a single pump application. All units are bench tested after assembly to 180 MPa to verify output.
• Alpha 550LPH CP3 Pump — Unveiled at PRI 2023, the Alpha 550LPH represents the pinnacle of Exergy's pump technology. It delivers more consistent and linear fuel flow than competing designs, especially above 4,200 RPM — a range where conventional CP3 pumps begin to fall short. Engineered as a complete system rather than just a high-flow pump, the Alpha series emphasizes controlled delivery, reduced heat generation, and repeatable rail pressure tracking across the full RPM and load range.
• Scorpion CP4.2 Pump Series — Covering both improved-stock and 10mm stroker variants, the Scorpion line addresses the Duramax LML and Ford Power Stroke platforms. The improved-stock Scorpion CP4.2 features a two-layer 25-micron screen designed to capture metal debris and help protect the rest of the fuel system in the event of a pump failure — a critical safety feature for CP4-equipped trucks.

Why Exergy Pumps Are Engineered Differently

Exergy's approach to fuel injection pump development centers on precision metering, thermal robustness, and flow verification. Their Alpha series pumps, for instance, feature optimized internal clearances and control strategies designed to maintain commanded rail pressure with minimal overshoot or oscillation — a key advantage when running large injectors or aggressive tunes. Flow-verified calibration ensures each pump pairs correctly with its intended injector size and power target, supporting both clean power delivery and OE-like daily drivability.

Whether you are building a competitive sled puller, a high-output tow truck, or a track-day diesel, Exergy's fuel injection pump lineup provides a solution validated by engineers who have spent careers inside OE diesel fuel system programs. Browse the full fuel injection pump category or visit the Exergy Performance brand page to explore their complete diesel fuel system offerings.