Hi James,
We should be able to get your 2001 Jayco Heritage Manistee a replacement hub, but we don't have any way of knowing what is on it so I can't give you a part number, unfortunately. So in order to find the correct hubs you will need to take apart your current hub assembly and look at the bearings themselves; wipe away the grease and you should be able to see the part number stamped directly on them.
If you are unable to find them, you need to use a digital caliper and measure your... view full answer...