Description New MPROP for 2001-2004 GM 6.6L LB7 Duramax CP3 Fuel Pumps Reference # 0928400535 / 904-570 / PR437 / 97728979 Direct replacement Fuel Injection Pressure Regulator / Fuel Metering Valve This fuel pressure regulator is engineered to match the function of the original equipment regulator. It is engineered to help ensure proper fuel injection pressure when the original regulator has failed or is malfunctioning.
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