2011-2016 Duramax Disaster Kit w/ CP3 Install Kit (4G6105)
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Description
Description
The 4G6105 is a complete fuel system rebuild kit for 2011-2016 LML Duramax trucks that have suffered a CP4 pump failure. When a CP4 grenades, it sheds metal shavings through the entire high-pressure side — and because the LML runs a closed-loop fuel system (fuel cycles back to the pump without re-filtering), the contamination wrecks injectors, rails, and the fuel regulator within minutes of detection. This kit replaces everything downstream that needs to come out: the failure-prone CP4 system goes, and a CP3 conversion goes in its place.
The CP3 pump is not included in this kit — it's sold separately so you can pick the right pump for your build (stock CP3, mild performance, or race-spec). Message us if you need a recommendation on the pump that matches your build target.
Custom tuning is required after this conversion — the ECM needs to be reflashed to support the CP3 pump (different control logic than the CP4 it replaces). Plan on a tuning shop or remote tune file before driving the truck.
Features
Features
- Complete LML CP4 Failure Recovery — Converts to CP3 Platform
- 8 Bosch Remanufactured Stock Injectors
- OEM Fuel Lines — Pump Right Side to Rail, Rail to Rail, Pump Left Side to Rail
- OEM Return Line Hose
- Bosch Fuel Rails (Pair)
- CP3 Conversion Kit (Adapter + Hardware)
- Fuel Filter Service Kit Included
- All OEM-Spec Replacements
- Custom Tune Required After Install — Not Plug-and-Play
- CP3 Pump Sold Separately — Pick Your Spec
Notes
Notes
- The CP3 Injection Pump is NOT included. Pick your CP3 separately based on your build target — stock-spec replacement, mild performance, or race. Message us if you need a recommendation.
- Custom tuning is required after the conversion — the ECM control logic for a CP3 is different from the CP4 it replaces. Without the right tune, the truck will throw codes or won't start.
- Core charge applies on the returned components — full refund when cores are shipped back within Industrial Injection's return window.
- If you're not sure whether you've had a CP4 failure or a different fuel system issue, send us a diagnostic before ordering — this kit only solves CP4 grenade scenarios.
Questions and Answers
Questions and Answers
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