I have a Ford factory 9" Posi carrier in good condition.It uses 31 spline axles.It won't fit all 9" housings.You will have to measure the id and od of your current carrier bearings.I forgot to measure these.But Ford used 2 different sizes of carrier bearings.I will have to measure these and post it here later.I would suggest replacing these carrier bearings with new.I am selling it cause I don't have a use for it.Cash Only
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