Fleece Performance 01-13 GM Duramax 6.6L Duramax CP3K (LBZ/LMM Based)

Fleece Performance is well-known for building robust parts for diesel trucks, and their CP3K injection pump is a prime example of that expertise. This pump is designed for GM Duramax 6.6L engines from 2001 through 2016, including popular models like the Chevrolet Silverado 2500 HD and GMC Sierra 3500 HD. If you've noticed a drop in fuel flow and rail pressure once your engine passes 3,000 RPM, this modified CP3 pump is built to address that specific limitation.

The factory CP3 pump can become a restriction in the fuel system at higher RPMs, leading to lost power. The Fleece Performance CP3K is a modified LBZ-based CP3 pump engineered to eliminate that restriction, allowing for more consistent fuel delivery and rail pressure as your engine works harder. Each pump is rigorously tested on Fleece's in-house engine simulator and pump test stand to ensure it meets their standards and is ready for demanding use. This means you can count on reliable performance when you need it most.

This pump is a direct replacement for your stock CP3, making installation straightforward for those familiar with fuel system work. While it's designed to work with a range of GM Duramax trucks, please note that it is not CARB approved and cannot be shipped to California. If you're looking to unlock more consistent fuel flow and maintain rail pressure in your modified Duramax, this CP3K is a solid option.