Hot Rods SW early electric senders

Hey guys I have these electric water temp (100-240) , electric oil pressure 0-80 and a fuel gauge as well. they are early 12V. Will any new senders available work with these? Or do I need to find originals? Thanks, Joe

 

There should be a part number on the edge of the gauge face, if you look at the Stewart Warner website you should be able to come up with what senders to use.