QU50535 Dana 25, Dana 44 Inner Timken® Pinion Bearing Cup for most Dana-Spicer Model 25 and Model 44 front or rear drive axles from 1946 to current. This is a First Class, original equipment quality bearing cup that meets or exceeds all vehicle manufacturer specifications making it the top choice for heavy-duty applications like yours. Country of origin may vary as Timken produces Bearings in plants located around the globe, however QU50535 is almost always made in either Canada or the United States.
Always replace the cup and cone at the same time.
The matching Bearing Cone is QU50536.
Rebearing service procedures are covered in my TM4400 Pinion and Differential Bearing Service on Dana-Spicer Monobeam Axles.