Hikurangi scored in the first minute of the second half but Mangapai got a breakaway soon after to level the scores.
Keeping their composure, Hikurangi struck back immediately before scoring another two well worked goals in the third quarter to lead 4-1.
The game slowed again in the final quarter but both sides added one more to their tally to take the score to 5-2.
In other premier matches on Saturday, Springfield continued their dominance on the competition with a 4-1 win over Whangarei Girls' High School while Old Girls beat Maungakaramea 4-2.
In the premier men's matches, Mangapai beat Bream Bay 4-0 on Friday and Springfield beat Maungakaramea 4-1 on Saturday to remain on top of the table.