My crystal ball is foggy on winter days so I have no idea what you are working on, but it has a green /red color this time of year so I assume it might be a John Deere or Ariens ??
That said, you can go to partstree.com and type in your tractor type & model number then look up the parts to see if the numbers are the same, just like we do

Some are the same some not, also power steering makes a difference.