●This set of 8 dummy regulators for the common rail high pressure pump allows the user to determine if the fault is the regulator or the pump . ●The dummy regulator kit tricks the common rail pump into producing maximum pump pressure ●Works with the following pumps Delphi DFP1 & DFP3 Bosch CP1, CP3 & CP4 Denso HP1, HP2 & HP3 Siemens DCP type 1 & 2
