WC Fab CP3 Conversion Kit - 17-22 Duramax L5P, Includes Custom Exergy - 14mm CP3

Thoroughbred Sku #: WCF100458

Your Selected Vehicle Does Not Fit, Please Select a Vehicle

Select a Vehicle

Selected Vehicle

Year/Make/Model: {{year}} {{make.Name}} {{model.Name}} Edit

Item Options:

Prop 65:
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
Shipping Restrictions:
This part is NOT available to ship to the state of California.


NOTE: These products are made to order and can experience extended lead times.


View All applications


Product Details

Product Name: WC Fab CP3 Conversion Kit - 2017-2022 GM Duramax L5P, Includes Custom Duramax Tuner - 14mm CP3
Manufacturer: WC Fab
Manufacturer Part #: WCF100458
Thoroughbred Diesel Part #: WCF100458
Fitment Notes: 2017-2022 GM Duramax L5P

These kits are the perfect solution for trucks with bigger turbo kits and injectors that have reached the limits of the stock HP4 pump and are in search of more power.

***Requires use of an aftermarket low pressure / CP3 compatible lift pump. Not compatible with OEM L5P in-tank pump or high pressure lift pumps designed for use with HP4 injection pumps.***

Which CP3 pump size option is best for you?

14mm (WCF100458)- Ideal for built competition engines using power adders, big single or custom compound chargers with custom injectors looking to push the limits of the L5P platform.

NOTE: CUSTOM TUNING IS REQUIRED. This is a Racing Product for Competition use only. 


  • Anything powder coated will have a lead time of 15-25 days.
  • Non powder coated products will have a 2-3 day lead time.

WC Fab CP3 Conversion Kit - 2017-2022 GM Duramax L5P, Includes Custom Duramax Tuner Features:

  • Your Choice of Custom Duramax Tuner Sportsman 14mm CP3 pump specific to this kit
  • Billet Aluminum, Black Anodized CP3 Pump Mount Plate
  • High Pressure Fuel Line
  • High Pressure Rail Fitting
  • Fuel line and Clamps
  • Stainless CP3 Barb Fitting
  • Stainless Hardware
  • For more information on WC Fab call us at 1-859-737-4966.


There are no Questions to display