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  6. Fleece Performance 11-16 GM Duramax 6.6L LML CP3 Conversion Kit - with CP3K Pump

Fleece Performance 11-16 GM Duramax 6.6L LML CP3 Conversion Kit - with CP3K Pump

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Your Price: $1,783.00
Retail Price:$1,872.15
You Save:$89.15(5%)
Part Number: FPE-LML-CP3-FF-3K
Availability: In Stock.

The stock CP4 is only capable of supporting up to ~500rwhp and was introduced as a cost reduction to the LML platform since a smaller amount of fuel is required when running the more efficient piezoelectric injectors. Since its introduction, the CP4 has proven to be less reliable and less capable than the CP3 used in previous Duramax platforms. A CP3K is capable of supporting 600+ RWHP in conjunction with the piezoelectric injectors. The reliable and proven PowerFlo 750 is capable of supporting nearly 850+ RWHP.

Kit Contents:

  • High-Pressure Fuel Rail Line
  • Fuel Rail Plug and Nut
  • CP3 Block Adapter with O-ring
  • (3) CP3 Block Adapter Bolts (Flange Head, M8x1.25x35mm)
  • CP3 Pump Fittings – 3/8"
  • CP3 Pump Fittings – 1/2"
  • (2) Sealing Washers
  • Low-Pressure Fuel Feed Line
  • 3/8”x8” Flexible Fuel Line with Hose Clamps (CP3 Return)
  • 1/2”x30” Flexible Fuel Line with Hose Clamps (Filter to CP3)
  • 3/4” P-Clamp
  • Fuel Return Line Block Off with O-ring



This product is not legal in the state of California. When used incorrectly this product may violate local, state, and federal laws pertaining to emissions, traffic, registration, and safety. The use of this product may damage or destroy mechanical and/or electrical components of this vehicle. The use of this product may void or nullify the vehicle's factory warranty. User understands that motorsports are dangerous, and that installation of this product may subsequently require special driving skills or techniques to safely operate the vehicle.The user assumes sole responsibility for the safe, proper, and legal use of the vehicle at all times. The purchaser and end-user releases indemnifies, discharges, and holds harmless Fleece Performance Engineering, Inc. from any and all claims, damages, causes of action, injuries, or expenses resulting from or relating to the use or installation of this product that is in violation of the terms and conditions on this page, the product disclaimer, and/or the product installation instructions. Fleece Performance Engineering, Inc. will not be liable for any direct, indirect, consequential, exemplary, punitive, statutory, or incidental damages or fines cause by the use or installation of this product. Off-Road and competition use only - this product may not work with the EGR cooler installed depending on the CP3 pump utilized. This product MUST be used in conjunction with custom tuning calibrations, reference the Fuel Pressure Regulator Table link above. Failure to install the correct table calibrations will result in derated performance.

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