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After a catastrophic CP4 failure, small metallic debris will be sent through the fuel system.
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.
This kit will supply you everything you need to properly replace the fuel system EXCEPT the injection pump.
Install Kit Includes:
Master Filter Head Kit (Filters, filter head rebuild kit / spacer, WIF plug, bleeder screw, MA Additive)