Smith, who has started at fullback all season, replaces Waisake Naholo in the number 14 jersey, with his fellow All Black being rested.
Smith is replaced at fullback by utility Fletcher Smith.
Tyrel Lomax will start at tighthead prop with regular tighthead, Siate Tokolahi, having been ruled out for six weeks with a knee injury.
Aaron Smith returns to the starting lineup.
Liam Coltman replaces Ash Dixon at hooker and Elliott Dixon starts on the blindside.