Derick Brassard also scored in the third period and Henrik Lundqvist made 32 saves, including a highlight-reel stop on Max Talbot, as the Rangers beat the Bruins for only the third time in 12 meetings (3-9).
Jimmy Hayes scored for the Bruins, and Tuukka Rask had 28 saves. Boston is 2-6-1 in its last nine games.
It marked the first time this season the Rangers have overcome a deficit at the start of the third period and won in regulation. They were 0-11-2 entering the game.
Lundqvist kept the game tied with a magnificent save on Talbot shortly after Brassard evened the score early in the third.
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