CP3 Conversion Kits
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Fleece - LML CP3 Conversion Kit - No Pump - 2011-2016 GM 6.6L LML Duramax - FPE-LML-CP3-NP
$749.00
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Fleece - LML CP3 Conversion Kit with CP3 Pump - 2011-2016 GM 6.6L LML Duramax - FPE-LML-CP3-WP
$2,095.00
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Fleece - LML CP3 Conversion Kit with HD CP3 Pump - 2011-2016 GM 6.6L LML Duramax - FPE-LML-CP3-10
$2,749.00
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Full CP4 to CP3 Conversion Kit (50 State CARB) - 2011-2016 GM 6.6L LML Duramax - LML-CP3-CONV-CARB
$5,136.28
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Full CP4 to CP3 Conversion Kit - Offroad Use Only - No Tuning Required - 2011-2016 GM 6.6L LML Duramax LML-CP3-CONV-OR
$4,711.28
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Full CP4 to CP3 Conversion Kit - Offroad Use Only - No Tuning Required - Bosch Injectors - 2011-2016 GM 6.6L LML Duramax - CP3-CONV-GM1116-LML-NT
$5,181.12
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S&S Diesel - LML CP3 conversion kit (50 State) w/pump - CARB exempt - w/ DPF - No Tuning Required LML-CP3-CARB
$2,600.00
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S&S Diesel - LML CP3 conversion kit w/o pump LML-CP3-OR-NOPUM
$810.00
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S&S Diesel - LML CP3 conversion kit w/pump - Offroad Use Only - No Tuning Required - 2011-2016 GM 6.6L LML Duramax LML-CP3-NTR
$2,175.00
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S&S Diesel - LML CP3 conversion kit w/pump – Competition Use Only – Tuning Required - LML-CP3-TUNING-REQ - LML-CP3-TUNING-REQ
$1,780.00
The LML CP3 conversion page is for owners who already know they want to move away from the factory CP4 setup. The goal is not just more fuel; it is a more dependable high-pressure pump layout for a truck that tows, works, or has higher mileage.
Most conversion kits include the CP3 pump itself along with the lines, fittings, brackets, and calibration-related parts needed to complete the swap. Many owners make the change before the original CP4 ever fails, especially on trucks used for towing or long-distance travel.