Are axles interchangeable ? Just trying to learns some ins and outs of this jeep repair. My thought was to buy two salvage yard axles (cheap @$20 each) clean them up and put on new bearings etc for replacement of existing axles that have noisy bearings or is it easier to just fix what I have? There is a time factor figured in due to lack of another vehicle and my mechanic is a little slow! so I thought the axles would be ready before he is.