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What is this and should something be hooked up to it?? Impala 2002 3.8
ImpalaWhile undergoing many facelifts in its history, the Impala has proved itself to both civilians and police forces as one of the most capable 4-door cars GM has ever offered. Currently moving towards its 10th generation the Impala is one of the longest lasting and popular models.
Fuel pressure regulator and the threaded outlet is for checking the fuel pressure. Should have a screw on cap on it, but likely someone failed to install it or lost it.