Fleece Performance CP3K Fuel Pump

2004–2007 Dodge Ram 2500 / Ram 3500 5.9L Cummins

FPE-CUMM-CP3K-5.9

Overview:

The Fleece Performance CP3K Fuel Pump is a precision-engineered upgrade designed specifically for the 5.9L Cummins engines found in 2004 to 2007 Dodge Ram 2500 and Ram 3500 trucks. This modified CP3 pump addresses a common limitation in the factory fuel system by eliminating the fuel flow restriction that occurs above 3,000 RPM. By maintaining consistent fuel rail pressure throughout the entire RPM range, the CP3K ensures improved engine performance and responsiveness under demanding conditions.

Ideal for diesel enthusiasts and professionals seeking reliable fuel delivery for towing, hauling, or performance applications, the CP3K is a cost-effective solution that enhances your truck’s fueling capabilities without the need for extensive modifications.

Key Features:

The Fleece Performance CP3K Fuel Pump offers a range of benefits engineered to optimize fuel delivery and engine efficiency:

• Eliminates factory fuel flow restriction starting at 3,000 RPM for consistent fuel delivery
• Maintains desired fuel rail pressure across the entire RPM range
• Modified specifically for the 5.9L Cummins CP3 pump platform
• Cost-effective upgrade compared to full pump replacements or extensive fuel system modifications
• Tested rigorously on Fleece Performance’s in-house engine simulator and pump test stand
• Direct fitment for Dodge Ram 2500 and 3500 models from 2004 to 2007
• Enhances engine performance during high-demand scenarios such as towing and heavy load operation
• Durable construction designed to withstand the rigors of diesel fueling systems

Construction & Design:

The CP3K pump is built with high-quality components and precision machining to ensure durability and reliability. Fleece Performance engineers have modified the internal components of the factory CP3 pump to remove the restrictive elements that limit fuel flow at higher RPMs. This careful reengineering preserves the pump’s OEM form factor and mounting points, allowing for a seamless replacement without compromising structural integrity or compatibility.

Each pump undergoes thorough testing on specialized equipment that simulates real-world engine conditions, ensuring consistent performance and longevity under heavy-duty use.

Installation & Fitment:

The Fleece Performance CP3K Fuel Pump is designed as a direct replacement for the stock CP3 pump on 2004–2007 Dodge Ram 2500 and 3500 trucks equipped with the 5.9L Cummins engine. Installation requires standard mechanical skills and common tools, with no major modifications needed to the fuel system or engine components. This plug-and-play design minimizes downtime and simplifies the upgrade process for both professional installers and experienced DIY enthusiasts.

What’s Included

• Fleece Performance CP3K Modified Fuel Pump
• Installation instructions
• Quality assurance and testing certification

Ideal For:

This fuel pump upgrade is perfect for Dodge Ram 2500 and 3500 owners who want to maximize their 5.9L Cummins diesel’s fueling efficiency and performance. It is especially beneficial for:

• Towing and hauling heavy loads
• Diesel performance enthusiasts seeking improved throttle response
• Fleet operators requiring reliable fuel delivery under sustained high RPM conditions
• Anyone experiencing fuel rail pressure drop-offs above 3,000 RPM with the stock CP3 pump

Fleece Performance Engineering is a diesel performance manufacturer known for innovative upgrades and reliability-focused solutions for Cummins, Duramax, and Power Stroke platforms. From turbo and fuel system components to cooling and electrical repair solutions, Fleece parts are built for owners who demand stronger performance without compromising dependability.