That isn't a valid part # and google doesn't seem to help. Usaually , if one is worn- the other isn't far behind. Especially after 25 years... If you post the part # or the model # from below the seat it may be helpful.

Thanks Tom.... sorry I didn't post the right number.
It looks like it has bearings with it. I did do some more searching and they seem to think it's easier to replace the blade adapter as well so I don't have to fight to get the old one off.
Thanks for getting back to me.... think I'm ready to fight the fight now....

Here is a link that might be useful: Spindle I need

Yes, complete w/ bearings. And yes, a great idea to install a new hub (and with grease or anti-sieze) with new hardware.

I have a Craftsman with a 42" deck and have purchased a pair of shaft/spindle assemblies. How do I remove the belt pulley off the spindle (threads are the same direction as the bladed). Do I need a special tool or is there some "trick" I'm missing?

The nut is a standard thread- so lefty loosy w/ a 7/8 socket. An impact wrench is the best way, but you hopefully can hold the shaft w/ the blade or use the belt as a grip to keep it from turning. If the housing is good, leave it bolted to the housing- then you can drive the shafts out and just use the new shaft kits and save the housings until you break one.