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Fleece Performance Emissions Compliant 2011-2016 LML CP3 Conversion Kit

Shipping: CARB EO: D-834-1
Was: $1,999.00
Sale: $1,699.15
Save: 15%
Save: $299.85

Free Shipping - Ground


Convert your LML's fuel system from a CP4 to a CP3

Improve your LML Duramax's reliability and fueling capability with a CP3 conversion. Since its introduction, the CP4 has proven to be less reliable and less capable than the CP3 used in previous Duramax platforms.  Failures of the CP4 are extremely costly and require replacement of the entire fuel system. Avoid a costly failure down the road and convert your CP4 to a CP3 with our complete, no tuning required kit for the 2011-2016 LML Duramax platform. Our kit provides you with OEM fit-and-finish features like a brand new Bosch CP3, Fleece exclusive molded hoses for the fuel feed and return, high flow CP3 fuel fittings, and our valley feed line to support aftermarket lift pump applications.  


  • New Bosch CP3
  • High flow CP3 feed and return fittings
  • Preformed feed and return fuel lines
  • 50-state compliant; EO# D-834-1
  • No tuning required


Watch the complete installation of this kit here

Read the complete installation instructions here


Kit Contents:

  • New Bosch CP3 high pressure injection pump
  • CP3 to rail high pressure fuel line
  • High flow CP3 feed and return fuel fittings
  • Preformed feed and return fuel lines
  • CP3 mounting adapter
  • Dosing injector feed line
  • FCA extension harness
  • Fuel temperature sensor mounting bracket
  • Low pressure fuel feed lines
  • Hardware kit


* Patent Pending

** Dorman 904-484 or CTA 3477 fuel line quick disconnect tool recommended for use when installing this kit.


 Prop 65WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov 




Shipping Information

  • Item Requires Shipping
  • 25.0 lbs.
  • W10.0000” x H8.0000” x L20.0000”
  • Free Shipping - Ground
  • CARB EO: D-834-1

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