S&S Diesel LML CP4 to CP3 Conversion Kit

For 2011-2016 GM 6.6L Duramax LML

S&S Diesel LML-CP3-CARB CP4 to CP3 Conversion Kit (Part # LML-CP3-CARB) provides a reliable solution to replace the failure-prone CP4.2 high-pressure fuel pump with a durable CP3 pump. It requires no tuning changes, maintains factory emissions, and comes with all necessary hardware for installation. Ideal for preventing costly fuel system damage in GM Duramax LML engines.