Joe Vitale added his first goal in more than a year for the Penguins, who have beaten the Bruins five consecutive times.
The Penguins scored three times in the final 7 minutes Tuesday to steal a 3-2 victory. There were no dramatics necessary this time, as hockey's hottest team never trailed to remain unbeaten in March.
Pittsburgh, which moved into first place in the Eastern Conference — two points ahead of Montreal — has allowed just five goals in five games.
SENATORS 4, JETS 1
OTTAWA (AP) — Jakob Silfverberg scored twice to lead Ottawa over Winnipeg.
Trailing 2-0 heading into the third, the Jets finally beat Lehner at 3:26 as Bogosian's shot from just inside the blue line made it through traffic and just under the crossbar.
Evander Kane had a great chance to tie the game midway through the period on a 2-on-1 break, but was robbed by Lehner, who made a great pad save.