Hodgson has failed to recover from a hamstring injury, which saw the fullback leave the field prematurely for Warrington against Leeds.
Shannon McDonnell will directly replace Hodgson, while Sia Soliola moves from the second row to the centres to replace Sa.
David Fa’alogo, who was originally brought into the squad as 18th man, will start at loose forward. while Trent Waterhouse will occupy Soliola’s original second row spot.
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Warrington coach Tony Smith says he is delighted for his players to have carved out a spot in the grand final next Saturday.