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Old 08-25-2020, 12:26 AM   #11
PDXk5
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Join Date: Aug 2012
Location: Portland, OR
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Re: 12 Bolt Fill Plug

Quote:
Originally Posted by DeadheadNM View Post
I believe the fitting for a posi axle is an “outie” like shown whereas the non-posi axles use an “innie” and these styles are not interchangeable as the threads differ. Here are example posi fittings and these have the shoulder to retain the posi tag.
Pete,
My rig has the original posi differential with original red tag and an innie square drive plug. This is a pic of the side of my differential before I had it rebuilt and a photo of my SPID. Not sure if mine is an oddity or there are others but I thought I would share.
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