Industrial Injection 436406 CP4 to CP3 Conversion Kit with 120% Over Pump 11-16 6.6L GM Duramax LML

With the release of the LML Duramax in 2011, GM made the switch from the reputable CP3 injection pump to the lower output CP4 pump, simply because they deemed it was Is good enough for you and your truck? We've seen numerous failures of the CP4 on stock trucks, let alone even slightly modified trucks that chew them up and spit them out. Industrial Injection has this complete conversion kit that delivers everything you need to swap out your failure prone CP4 to a dependable CP3, including a 120% over CP3 that is capable of supporting over 900 horsepower.

Proven Reliability

• The CP3 fuel pump is proven to have longevity and to be reliable in performance applications.

Remove the Worries

• The CP4 has known failure issues that cannot be remedied. These issues, if they occur, can cause damage to other major fuel system components.

Tuning Required

• In order for this kit to function properly, it requires custom tuning, such as EFILive or EZ LYNK.