The Buccaneers fell behind early to the Titans, as three penalties on Grand Haven in the first period helped Traverse City West take a 1-0 lead into the first intermission.
The second period saw Grand Haven clean up their play and add some extra pressure on the Titans, as the Buccaneers scored four goals in the period to take a commanding 4-1 lead into the second intermission.
The Grand Haven defense held strong the rest of the contest, and the Buccaneers capped off their impressive rally with an empty-net goal in the final minute of play.
Junior forward Cooper Fox scored twice and added two assists to led the Bucs' attack, while senior Trevor Kalis added two goals and an assist.
Spring Lake sophomore Luke Rantanen made the most of his promotion to the second line, netting a goal off an assist from fellow Laker Ethan Pennington late in the second period.
Grand Haven-Spring Lake (14-12) advances to take on the Bay City Reps (20-5) in Thursday night's regional semifinals at Griff's Ice House with puck drop set for 6 p.m. The Reps knocked off Reeths-Puffer 6-4 in the opening game of the night.
The winner of Thursday night's showdown will face the winner of Rockford (16-6-2) vs. Kenowa Hills-Fruitport (8-18) in Saturday's regional finals at 5 p.m.