Fleece Performance 01-13 GM Duramax 6.6L Duramax CP3K (LBZ/LMM Based)
Fleece Performance 01-13 GM Duramax 6.6L Duramax CP3K (LBZ/LMM Based)
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Fleece Performance 01-13 GM Duramax 6.6L Duramax CP3K (LBZ/LMM Based)
The Fleece Performance CP3K is a high-performance upgrade specifically engineered for your 2001-2013 GM Duramax 6.6L engine. This modified CP3 pump is designed to tackle the factory fuel flow restrictions that can hinder your engine's performance at higher RPMs.
Key Features:
- Enhanced Fuel Flow: Eliminates the factory fuel flow restriction that occurs at 3,000 RPM, ensuring optimal performance.
- Increased Power: Prevents loss of fuel flow and rail pressure after 3,000 RPM, helping you maintain horsepower when it matters most.
- Cost-Effective Upgrade: A budget-friendly modification that offers significant improvements in engine efficiency.
- Thorough Testing: Each CP3K is rigorously tested on in-house engine simulators and pump test stands, guaranteeing reliability and readiness to perform.
Installation Notes:
For optimal results, the fuel pressure regulator will need to be scaled appropriately when installing the CP3K on 2001-2005 models (LB7 or LLY).
Conclusion:
Upgrade your Duramax's performance with the Fleece Performance CP3K and experience a significant boost in fuel efficiency and power. Don't settle for factory restrictions; unleash the full potential of your engine!
Shipping & Returns
Shipping & Returns
📦 Shipping:
Orders are processed within 1–2 business days. Standard delivery takes 3–7 business days, depending on your location.
↩️ Returns:
You may return or exchange products within 60 days of receiving your order. Items must be in original condition with proof of purchase. If your item is defective or damaged due to manufacturing issues, we’ll replace it at no additional cost.

