H&S Motorsports CP3 Conversion Kit

This kit will replace the factory CP4 high pressure fuel pump with a CP3 high pressure fuel pump. CP3 pumps are commonly found on the older Duramax (and Cummins) platforms and have proven to be very reliable. This kit is also great because it allows the use of highly modified CP3 pumps that can be used to provide a SERIOUS amount of high pressure fuel flow.