Ilya Kovalchuk and David Clarkson scored less than two minutes apart in the second period as New Jersey beat Pittsburgh for its season-high fifth straight win.
It was the second time New Jersey beat Pittsburgh in as many games after the Devils ended the Penguins' five-game winning streak in the first of installment of the home-and-home series Saturday.
Clarkson's power-play goal at 13:20 of the second period to make it 3-0 was his second of the game and team-leading ninth goal of the season. Johan Hedberg made 23 saves and the former Penguins goalie won his first game in five starts in Pittsburgh as a member of the visiting team (1-4-1).
Tomas Vokoun made 20 saves in his first start at home and James Neal scored Pittsburgh's only goal 15 seconds into the third period. Sidney Crosby, whose season-high six-game points streak ended Saturday, was held without a point for the second straight game.
Devils 3, Penguins 1