CP3 Conversion Kit (2011-2016 Chevy/GMC Duramax LML)

CP3 Conversion Kit w/ Pump (Tuning Required)

S&S Diesel Motorsport, the world leader in common-rail diesel injection has developed a solution for CP4.2 high-pressure pump failures that have plagued the LML Duramax engine. The S&S solution is to remove the problem before it becomes a problem, by replacing the CP4.2 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). 

AVAILABLE OPTIONS:

• LML CP3 conversion kit w/pump – Competition Use Only – Tuning Required

Learn more about our 50 State Kit in this great tech article from Trailer Life Magazine

Learn more about CP4 failures and our 50 State solution from Diesel Power

Download Installation Instructions