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Fleece Diesel Performance


2011-2016 6.6L LML Duramax CP3 Conversion Kit

LML Duramax Fuel System Conversion from a CP4 to a CP3

The Fleece FPE-LML-CP3-FF-3K LML CP3 Conversion KitContains

  • High-Pressure Fuel Rail Line
  • Fleece Performance CP3K Fuel Injection Pump
  • Fuel Rail Plug and Nut
  • CP3 Block Adapter with O-ring
  • (3) CP3 Block Adapter Bolts (Flange Head, M8x1.25x35mm)
  • 3/8" CP3 Pump Fittings
  • 1/2" CP3 Pump Fittings 
  • Two Sealing Washers
  • Low-Pressure Fuel Feed Line 
  • 3/8” x 8” Flexible Fuel Line with Hose Clamps (CP3 Return)
  • 1/2” x 30” Flexible Fuel Line with Hose Clamps (Filter to CP3)
  • 3/4” P-Clamp
  • Fuel Return Line Block Off with O-ring

The Duramax 6.6L Fuel Injection Conversion Kit Applications:

  • Chevrolet 6.6L Duramax LML 2011 to 2016 models 
  • General Motors 6.6L Duramax LML 2011 to 2016 models 

This Kit restores reliable diesel performance to your truck with the problem-prone CP4 fuel injection pump on the 2011 to 2015 GM 6.6L LML Duramax.  The Fleece FPE-LML-CP3-FF-3K LML CP3 Conversion Kit with CP3K Pump converts your stock CP4 to a CP3.  The installation of a Bosch CP3 used in prior versions of the Duramax allows you to regain lost performance and reliability. performance.  The CP3 conversion kit contains one Fleece Performance CP3K fuel injection pump capable of supporting 650 rear wheel horsepower when used with the piezoelectric injectors. This fuel pump offers increased fuel flow rates that must be adjusted with the values offered as a part of this kit. LML CP3 Conversion Fuel Pressure Regulator Table

NOTE:  Additional tuning may be required in order to adjust your vehicle to the increased performance levels offered by this fuel injection conversion kit.

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