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S&S DIESEL MOTORSPORT 50 State LML CP3 Conversion Compatible with 2011-2016 GM LML Duramax Diesel

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$2,600.00

$ 99 .00 $99.00

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About this item

  • More durable plug-and-play replacement for the CP4
  • Does not require any ECU calibration due to internal pump modifications that enable the CP3 to match the output curve of the CP4
  • OE fit and function, including a proper dosing line directly from the pump for emissions equipment and injector priming
  • 50 State Legal / CARB Compliant (EO# D-756-4)
  • Two-year, unlimited-mile warranty


S&S Diesel Motorsport, the world leader in common-rail diesel injection has developed a solution for CP4.2 high-pressure pump failures that have plagued the LML Duramax engine. The S&S solution is to remove the problem before it becomes a problem, by replacing the CP4.2 with a tried and true, bulletproof CP3 high pressure fuel pump. CP4 high pressure pumps are the Achilles heel of the LML Duramax engine because of high failure rates, and commonly taking out the entire, very costly, high-pressure system with it (injectors, rails, lines). S&S Diesel Motorsport offers the first CARB-compliant (EO #D-756-4) 50 State CP3 conversion available for the LML. This includes all hardware necessary to replace the troublesome CP4 with a bulletproof CP3, requires no tuning changes, and still maintains factory emissions control equipment.