2011-2016 Duramax LML CP3 Conversion Kit + Pump Failure Kit – No Tuning Required



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2011-2016 Duramax LML CP3 Conversion Kit + Pump Failure Kit

Shipping Note: Standard shipping on this kit is Ground due to size & weight.  Expedited shipping options are available (prices calculated based on delivery address) and will be displayed on the checkout page.

Click here for the CP3 Conversion Installation Guide

Fits 2011-2016 Duramax LML applications

  • Legal in all 50 States
  • CARB Compliant
  • Suitable for use with DPF systems (no delete required)
  • No Tuning Required

S&S Diesel Motorsport has developed a solution for the CP4 high-pressure pump failures that have plagued the 2011-2016 Duramax LML engine. The S&S solution is to remove the problem before it becomes a problem, by replacing the CP4 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 only CARB-compliant 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.

Each component carries a three-year warranty. Information about warranty policies can be found HERE.

Kit Details

    • S&S 50 State LML CP3 Conversion Kit
    • BOSCH® OEM New LML Injectors (8)
    • BOSCH® OEM New Fuel Rails
    • BOSCH® OEM New Return Line Assembly
    • GM OEM New Fuel Lines (Pump to rail, rail to rail & rails to injectors)

GM Part #s  19256590,  12661059, 98077841, 12670468, 12670469, 12670471, 12670460, 12639000, 12670466, 12651989, 12620532

BOSCH® Part #s 0 445 117 010, 0 445 010 817, F 00R L01 027, F 00R L00 591

Replaces GM Part #s 98063063, 98063064, 98063065, 98063066, 12620534, 19421169

Replaces BOSCH® Part #s 0 986 435 410, 0 986 437 421, 0 445 010 687

Replaces Diesel Forward Part # DKT1116LML