2004-2005 Duramax Dual CP3 Kit w/o Pump (433402)

The Industrial Injection Dual CP3 Kit for the 2004-2005 LLY 6.6L Duramax is the hardware-and-controller half of the dual-pump conversion — pump not included. Pick this version when you already have a second CP3 on the shelf or you want to source the pump separately. The kit gives you everything needed to plumb and control a second pump in parallel with the factory CP3.

Running two pumps in parallel cuts the drive load on the original CP3 by 50% and keeps fuel pressure constant under load, which lowers EGTs and improves reliability. If one pump fails, the controller automatically routes full fuel delivery to the remaining pump so the truck keeps running.

• Dual CP3 conversion hardware and controller
• Both pumps share the fuel-delivery load
• Drive load on the original CP3 reduced by 50%
• Constant optimum fuel pressure under load, lower EGTs
• Controller automatically switches to the working pump in the event of a failure

• Kit does NOT include the second CP3 pump.