Proper installation procedures of the S&S Diesel Motorsport 50 State LML CP3 Conversion Kit will maximize reliability of the fuel system and minimize the amount of time it takes to complete the …

The low pressure fuel feed line is a modified stock fuel feed line that gives the longer CP3 room to fit in the valley of the block. Disconnect the stock fuel feed line in the middle of the valley and …

Aug 19, 2014 · Cp3 conversion installed, photos and info included. A little background on this specific modification and purpose. The cp3 conversion is to remove the factory CP4 injection …

Convert your 2011-2016 Duramax to a CP3 with our Conversion Kit. Improves fuel system reliability and performance for demanding applications.

CP3 Pump Installation: Install CP3 in reverse order of CP4 removal. Remove CP3 cascade overflow valve and install it into supplied cascade block. Install supplied cascade banjo bolt, …

Note: Two prybars and a clean drift punch inserted into line work well to manipulate it. Return Line Parallel Remove CP4 from cylinder block, and polish mounting bore to aid CP3 installation. …

Jun 19, 2025 · At Weavertown Diesel, based in Myerstown, PA, we specialize in designing CP3 conversion kits tailored specifically for the 2011–2016 LML Duramax engines. These engines …

Hi Everyone, I just went through my first LML CP4 to CP3 conversion recently and put together a quick video to document some of my lessons learned.

Proper installation procedures of the S&S Diesel Motorsport 50 State LML CP3 Conversion Kit will maximize reliability of the fuel system and minimize the amount of time it takes to complete the …

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.