It was the Tigers' second straight sectional title.
Mamaroneck Tommy Spero tied a state record with his 19th career shutout and made 18 saves.
Harrison Schreiber, Michael Carducci, Harrison Fried and James Torre scored for Mamaroneck.
Mamaroneck faces Monroe Woodbury at 4:30 p.m. on Saturday, March 4 at Ice Time Arena, 21 Lakeside Road in Newburgh.
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