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Rudy's CP4 To CP3 Conversion Kit

Availability: In Stock & Ready To Ship!
Pricing: $489.95

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The RDP CP3 conversion kit for your 2011-2016 LML Duramax allows you to replace the unreliable factory CP4 injection pump to a more reliable, higher flowing CP3 injection pump. The factory CP4 pump is not capable of supporting more than 500 horsepower and is commonly known for failing. Replacing the CP4 with the CP3 allows you to support 600+ horsepower while increasing you reliability and performance! The RDP CP3 conversion kit includes all of the necessary hardware, fuel lines and adapters for a complete installation. This kit also allows the removal of the factory fuel filter.


  • Allows factory CP4 pump to be converted to CP3
  • Includes all hardware, fuel lines and adapters required
  • Supports more horsepower
  • Increased reliability and performance


  • EGR cooler must be removed in order to use this kit.
  • A low pressure fuel pump such as an AirDog or FASS is recommended.
  • Custom tuning is required to use this kit.
  • Professional installation highly recommended.

Fitment: 2011-2016 GM 6.6L LML Duramax Diesel

RDP CP3 Conversion Kit
11-16 LML Duramax

Product Series


  • DP0146
  • DP0146
  • Rudy's Performance Parts
  • In Stock & Ready To Ship!
  • New

Shipping Information

  • Item Requires Shipping
  • 20.0 lbs.

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