Replace the failed CP3 fuel pump on your 2006-2010 GM 6.6L Duramax LBZ/LMM with the XDP Remanufactured CP3 Fuel Pump XD523. If your fuel rail pressure is low or you’re experiencing a loss of power, it could be due to a failed CP3 pump. This CP3 Fuel Pump from XDP is assembled using high-quality components and is remanufactured to meet or exceed strict factory specifications. Every pump is end-of-line tested to ensure a long service life and includes a 2 Year / Unlimited Mileage.