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Fleece LML CP3 Conversion Kit FPE-LML-CP3-WP that is a safe and easy way to convert the fuel system from a CP4 to a CP3 in your 2011-2016 GM 6.6L Duramax LML. With a CP3 conversion, you will improve the reliability and fueling capability of your LML Duramax. The CP4 has proven to be less dependable and capable than the CP3 utilized in prior Duramax platforms since its introduction. CP4 failures are extraordinarily expensive and necessitate the replacement of the complete fuel system. Convert your CP4 to a CP3 and save money down the road with our complete, no-tuning-required solution for the 2011-2016 LML Duramax platform. This kit includes OEM-quality components such as a brand new OEM CP3, Fleece unique molded fuel feed and return hoses, high-flow CP3 fuel connectors, and a valley feed line to enable aftermarket lift pump and filter installations.
  • New OEM CP3
  • No Tuning Required
  • C.A.R.B. OE# D-834-1
  • Preformed Feed & Return Fuel Lines
  • High flow CP3 Feed & Return Fittings
Kit Includes:
Hardware Kit
CP3 Mounting Adapter
Dosing Injector Feed Line
Regulator Extension Harness
Low Pressure Fuel Feed Lines
CP3 to Rail High Pressure Fuel Line 
Preformed Feed & Return Fuel Lines
High Flow CP3 Feed & Return Fuel Fittings
Fuel Temperature Sensor Mounting Bracket
New OEM CP3 High Pressure Injection Pump