After a catastrophic CP4 failure, small metallic debris will be sent through the fuel system. Choose kit with CP4, CARB certified CP3, or no pump. https://www.merchant-automotive.com/Fuel_System_Replacement_Kit_LML.aspx | Merchant Automotive, LLC

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

3.3K views · 61 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

2.4K views · 64 reactions | WCFab LML CP3 Conversion Kit; We offer...