? Complete CP4 Failure Solution — Built to Fix It Right the First Time
for 2011-2016 GM 6.6L LML Duramax Diesel
When the CP4 pump fails on your LML Duramax, it doesn’t just stop working—it destroys your entire fuel system.
Metal contamination spreads through:
- Injectors
- Fuel rails
- Lines
- Return system
? That means one thing: you need a complete system fix—not a partial repair.
Kit Includes:
(1) Fleece CP3 Conversion Kit - No Tune Required - LML-CP3-WP
(8) Genuine OEM Injectors - 19256590
(2) Genuine OEM Fuel Rails - 12620532 / 12651989
(1) Bosch Return Circut - 12639000