Originally Posted by ranger rod
So the caliper bolt goes through it?
I believe the OEM might all be one piece. I know the Raybestos aftermarket version uses a separate 'guide pin lock bolt' to sort of attach it.
If it's a true one-piece, I would assume you need to use an open end wrench or vise-grips to thread it out - But I'm not 100% sure.
OEM Setup (I believe):
Raybestos aftermarket setup: