The Industrial Injection 436402 CP4 To CP3 Conversion Kit (Without Pump) is a sure way to increase reliability and performance in the fuel system of your 2011-2016 GM 6.6L Duramax LML. Built as a replacement for your factory CP4, the CP3 Conversion Kit eliminates the CP4 and uses the more reliable CP3 Pump.
Industrial Injection - 436402 - Features
Increased Reliability
Not For Stock Applications - Custom Tuning Required
