Seems like I saw a topic about replacements for a Hyatt A11424 bearing which has long been obsolete. I have not been able to find the thread again. I recently discovered the front wheel bearings in my 53 GMC 2 ton had been run dry. I looked in a 1966 bearing substitution book and found to use a 17888 and 17830. That is a tapered roller bearing so the cup and cone have to be replaced together. I ordered the bearings. They came in a Timken box made in USA and fit perfect.