No Problem TVA !
I just looked up the 310SG axle in the John Deere parts book. Copied the part number, and did an internet search.
That aftermarket one is the first one I saw.
If the tractor has the original axle under it, the JD part number should be correct for the one you are trying to repair.
Out of curiosity, maybe call a JD dealer and get a price from them. They sometimes sell aftermarket parts themselves. Depends on the dealer.
I would rather go with a new housing rather than repairing the old one.
i think the same model have two slightly different models of the axels.
About JD dealer - I find correct parts a lot faster from open source, than they with access to their database!
Plus JD is terrible on variations of the parts for the same model. They do not have good serial numbers brakedown, and don’t really have anything comparable to something like “arrangement number” - like CAT does.
It’s a nightmare!