hey, i have an inner pinion bearing here that is a np516549 that was in a kit with a 10.5 pinion bearing kit and the number says its for a dana 80. do you know if it will work in the 10.5 before i tear it down? its in a 2004 f250 diesel
10.5 had a large and small pinion bearing for the 10.50 10.25 Alot of the bearings are interchangeable between brand rears 12 bolt chevy inner is the same as 8.5 and 8.8 and dana 44HD amc Model 20 etc. I will look into it for you.
