2011-2016 Duramax CP4 to CP3 Conversion Kit w/o Pump (436402)

The 436402 is the pump-less version of Industrial Injection's CP4-to-CP3 conversion for the 2011-2016 6.6L Duramax LML. It's for builders who already have a CP3 on the shelf and just need the conversion hardware to make the swap.

The CP3 fuel pump is proven for longevity and reliability in performance applications. The CP4 has known failure issues that can't be remedied and can damage downstream fuel system components if it lets go. Part Number: 436402

• Direct replacement for the factory CP4
• Addresses known CP4 failure issues

• This kit does NOT include the pump

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• ?

  With this kit AND a cp3 off an 2007.5-2010 duramax, is there any tuning required?

  You must tune the ECM after installing a CP3 on an LML.