To be sure, I need fitting with a -4 AN male thread that will screw INTO the fuel rail, right? Not a -4 AN female fitting? Then the other side of the fitting is 1/8 NPT female to accommodate the 1/8 NPT male from the pressure sender?

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2004 Impala LS - got some mods
NAIOA Moderator

Making you think twice before picking on Impalas