2004.5-2005 6.6L LLY CP3 Regulator

Description

2004.5-2005 Chevrolet GMC 6.6L LLY Duramax CP3 Injection Pump Regulator MPROP

The CP3 pump regulator controls the fuel pressure that is being sent to the injector fuel rails and the injectors themselves.  Over time these will wear out or be contaminated causing inaccurate pressure control.  It is common to have an uneven idle or a loping idle.  If the problem is bad enough the varying idle RPM can cause the vehicle to want to move while stopped.

Typical life expectancy of the CP3 pump is 150,000 miles.  If your pump is near or past this mileage our recommendation is to not replace just the regulator, but instead install a whole new pump that comes with a new regulator installed.

Cross References:
0 928 400 653
0928400653
1 465 ZS0 058
1465ZS0058
24147
5G1506
904572
904-572
97369850
PR4277
PR439
V51110004

Find all your GM LLY Duramax diesel performance, repair, and upgrade needs here online or in person at Huckstorf Diesel’s sales and repair center located in Franklin / Milwaukee Wisconsin.