UNIONDALE, N.Y. — Rangers left wing Rick Nash does not quite look all of his 6 feet 4 inches and 200-plus pounds without his equipment. On the ice, he looms much larger — as the Islanders found out Thursday night.

Nash scored the tying goal with just over five minutes left in the third period, then set up Marian Gaborik for the winning power-play goal at the 42-second mark of overtime to lift the Rangers to a hard-fought 2-1 win at Nassau Coliseum.

With Michael Grabner — who scored for the Islanders — in the penalty box for hooking, Gaborik’s shot from the point blew past goaltender Evgeni Nabokov for his eighth goal of the season.

The win was the fourth straight for the Rangers and broke a two-game Islanders winning streak. A loud eruption from Rangers fans in an opponent’s building surprised Nash, who had toiled nine seasons with the often cellar-dwelling Columbus Blue Jackets before his 2012 trade to the Rangers.