There is only one, it's a whole assembly inside your gas tank that includes the gas gauge sensor, the fuel pump, and the filter (along w/ a small prefilter). It's large enough that it shouldn't ever need to be changed unless the pump goes faulty.
A really helpful member on WranglerForum
wrote up a removal process to replacing the pump unit, but as I said, the filter shouldn't be giving you any problems. Its good for usually the life of the vehicle. Check that link out for some pictures of the whole assembly.