Quote: I'm guessing but OE installs were probably a special socket designed with keys inside it to align with the slots
This is what I was thinking, but was there never a special service tool (or whatever Mopar called their specific tools) that they used at dealerships back in the day? Surely they didn't use Vice-Grip(tm) pliers evry time.
ahhh , why wouldn't they ??
what engine are you looking for this non existent tool for ?