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 …

Fleece LML Duramax CP3 conversion: Upgrade your LML's fueling system with our CP3 pump kit for increased reliability and performance.

WCF-LML Duramax CP3 Conversion High Pressure Line Upgrade Kit Description: - Longer and Larger I.D. High-Pressure Line than Street Series Kit and other CP3 Conversion Kits offered …

Avoid a costly failure down the road and convert your CP4 to a CP3 with our complete, no tuning required kit for the 2011-2016 LML Duramax platform.

Pay over time with Affirm. See if you qualify at checkout. LML and L5P CP3 Conversion Kits.

LML Duramax CP3 Conversion Kit with No Tuning Required installation. This kit replaces your problematic CP4.2 with a reliable CP3 pump.

This kit allows you to switch from the CP4 injection pump that come from the factory on the 2011-2016 LML Duramax trucks, to an earlier model higher volume CP3 injection pump.

Enhance your LML Duramax with the Fleece CP3 Conversion Kit, offering increased fuel delivery and efficiency. Upgrade confidently with this kit that includes the CP3 pump.

Prevent catastrophic fuel system damage caused by CP4 injection pump failure on your LML 6.6L Duramax Diesel truck with our comprehensive, No Tune Required CP3 pump conversion kit.