Trailing 4-2 entering the third period, the Amerks started the comeback by clicking on their only power play of the night when Travis Turnbull redirected Drew Schiestel's point shot at 7:49.
It was all Szczechura from there, as the center forced the extra session with his second goal of the night with under five minutes left in regulation before cashing in OT for his first career hat trick. The four points ties his career high. McNabb drew the lone assist on both the tying and winning marks.
With a one-time goal in the second period, Phil Varone has now earned a point in 14 of his last 20 games.
Drew McIntyre made 33 saves to improve to 7-11-0-2 on the year.
Foligno: 2A, +4, 6 SOG
McNabb: 2A, +3
Crawford: A, -1
Parker: 3 SOG
Szydlowski: 1 SOG
On Friday, the Amerks were defeated 3-2 in overtime by visiting Abbotsford to split the back-to-back set. Szczechura and Igor Gongalsky had the Amerks goals.
Schiestel: -1, 2 SOG
Lagace: -1, 2 SOG