S&S Diesel Motorsport

S&S Diesel 50-State CP3 Conversion Kit 2011-2016 GM 6.6L LML Duramax

SKU: LML-CP3-CARB
In stock - 8 items available
$2,600.00

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Verified Fitment & Application Support

This product is selected for proper fitment and compatibility with the listed engine application. Our team is available to assist with fitment questions, installation considerations, and supporting components to ensure a smooth install and reliable performance.

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This is the 50-state version of the S&S Diesel Motorsport LML CP3 conversion, supplied with the pump. It removes the CP4.2 high-pressure pump that gives the LML Duramax its reputation for expensive fuel system failures and puts a CP3 in its place. No tuning changes are needed and the factory emissions equipment stays on the truck, which is what makes it street legal in all 50 states.

Key Features

  • Replaces the CP4.2 high-pressure pump with a CP3
  • Includes the CP3 pump and the hardware needed for the swap
  • No tuning changes required; the pump is built to match the flow curve already in the ECM, including on trucks that are already tuned
  • Retains the factory emissions control equipment
  • CARB compliant, Executive Order D-756-4
  • No lift pump needed; the CP3 draws from the tank through its own gear pump
  • The first CARB-compliant 50-state CP3 conversion offered for the LML

Fitment

  • 2011-2016 Chevrolet Silverado 2500 HD and 3500 HD, 6.6L LML Duramax
  • 2011-2016 GMC Sierra 2500 HD and 3500 HD, 6.6L LML Duramax

Product Details

  • Brand: S&S Diesel Motorsport
  • Manufacturer Part Number: LML-CP3-CARB
  • Cross reference: Alliant Power item DKT20051

Orders typically ship within 24–48 hours of being received, but because of vendor shipping times some orders may take longer. We ship within the United States only (48 contiguous states plus DC).

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California Proposition 65
WARNING: This product can expose you to chemicals that are known to the State of California to cause cancer and/or reproductive harm. For more information, visit www.P65Warnings.ca.gov.