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Fit For GMC:
CP3 injection pumps are higher flowing and performance ones can support upwards of 600hp
Sierra 2500/3500 HD Classic WT 6
Sierra 2500 HD SL 6
Fits (For reference):2006-2010 GM 6
GM Duramax 6.6L LML - CP3 Conversion Kit (2011-2016) CP3 Conversion Kit Fit For GMC:Upgraded Performance CP4 to CP3 Conversion Kit This kit will allow you to upgrade your truck to the far more reliable CP3 and rid yourself of the factory CP4 pump. CP3 injection pumps are higher flowing and performance ones can support upwards of 600hp!** It is highly recommended that you add a lift supply pump when doing this upgrade, especially if you are also adding a performance fuel pump DONT STARVE YOUR CP3! The Duramax diesel from the factory
