The Bruins fell behind 2-0 in the first as the Mojacks Ben Sheremeta and Graham Lamers gave their team the lead.
Uxbridge fought back hard in the second outscoring the Mojacks 2-1 on goals by Mark Harris and Adam Bartholomew, Josh Dickson scored for Port Perry.
In the third period Mathew Hunter tied the game at 3-3 and sent the game to overtime where Mitchell Gustavsen scored the winner on a power play to give the Mojacks a 3-1 series Lead.
Ryan McConkey made several big saves as he was pelted with 58 shots over the course of the game. Uxbridge fired 42 at the Port Perry tender, Shawn Mabley.
Game 5 is Wed Feb.28th at 7:25 pm in Port Perry.