5K views · 75 reactions | Still running a CP4 in your LML Duramax? Our CP3 Conversion Kit is the upgrade that saves your fuel system before it’s too late. | Wehrli Custom Fabrication Inc. | Facebook

12 reactions | CP4 failure breakdown—learn the causes and how to prevent it! #diesel #dieseltruck #enginebuild #enginerepair #mechaniclife #truckrepair | Davesautocenter Tech | Facebook

23K views · 6.8K reactions | It’s junk! CP3 conversion on this LML Duramax | Dave's Engines | Facebook

https://www.merchant-automotive.com/LML_Duramax_CP3_Conversion_Kit.aspx The CP4 was introduced as a cost reduction to the LML platform since a smaller amount of fuel is required when running the more efficient injectors. Since its introduction it has proven to be less reliable than the CP3 used in previous Duramax platforms. NEW Bosch OEM CP3 No Tuning Required CP3 is already re-calibrated to match the LML stock CP4 fuel curve Kit is designed to replace the less reliable CP4 that comes stock on

WCFab LML CP3 Conversion Kit; We offer TWO different styles kits, and we often get asked, what is the difference? In this video we explain, Street Series Vs Race! What is a CP3 Conversion? The Factory CP4.2 Pump Found on 2011 and newer Duramax's has been known to be a problematic component. Even the slightest amount of fuel or water contamination can ruin the pumps internals leading to metal debris flushing throughout the entire fuel system. When these pumps fail it can lead to a repair job usua