The bearings are Hyatt OR1502. Timken has a crossover bearing that I can find if I search using the GM part number 111121 and gives a Timken number of R1502EL . I can't find any specs on the bearing though and it doesn't come up if you search that number through the general Timken search which has all the specs. I assume this is a direct replacement, not a repair bearing. I cleaned the National seal very well and no part numbers, just their name and pat.pend.
