Mario Culina made 48 saves, including six in overtime to lift Kitchener over Sault Ste. Marie 4-3. The Western Conference Final is now tied a 3-3.
Kole Sherwood scored the game winner for the Rangers at 13:12 of the extra frame.
The Rangers were up 3-1 with less than five minutes left in regulation when Taylor Raddysh scored back-to-back goals just over three minutes apart to send the game into overtime.
Givani Smith, Joseph Garreffa and Adam Mascherin all scored for the Rangers.
Game 7 is tonight in Sault Ste. Marie.