As far as I am a where you can't use a rear hub on the front axle. I'm trying to do some fault elimination on my front drivers side hub as I have the 3 amigo's on my dash and that hub is showing the fault so I bought a second hand hub to see if fault dissappear's or stays I have changed sensors but same issue the problem is the hub I have received may be a rear hub so I quiried it and they said that the 4 corners have the same fitment I know front and rear have different part numbers so does anybody know what the physical difference is between them apart from one goes on the front and the other goes on the rear lol.