S&S Diesel LML-CP3-CARB CP4 To CP3 Conversion Kit (With Pump)

The S&S Diesel LML-CP3-CARB CP4 To CP3 Conversion Kit (With Pump)  offers a permanent solution to the failure prone CP4 pump in your 2011-2016 GM 6.6L Duramax LML. S&S Diesel Motorsport specifically developed this kit to address the common CP4.2 high-pressure pump failures that have plagued the LML Duramax engine for years. The S&S solution is to remove the problem before it becomes a problem, by replacing the Bosch CP4.2 with a tried and true, bulletproof CP3 high pressure fuel pump.