CP3 Pump

The LBZ CP3 pump category is for high-pressure fuel pump work on 2006-2007 Duramax trucks. A weak CP3 can cause low rail pressure, long cranking, and power loss, but injector return and supply pressure should be checked too.

Stock replacement CP3 pumps, upgraded CP3 pumps, regulators, install parts, and related high-pressure fuel components support LBZ trucks with stock repairs or added fuel demand. Choose the pump around the truck's fuel demand, not just the highest advertised flow.