The visitors then went try-for-try with Poverty Bay in the second half, with Pakinga-Manhire scoring in the 48th and 53rd minutes, with Bowater converting the first of them.
Those bookended Poverty Bay's 50th minute try, and they scored again in the 62nd minute, but from there the defence of both team's held.
"The boys played well, it was an entertaining game," said Wanganui coach Jerome McCrea.
"The second half we turned the ball over a bit, and they had big ball runners. But the boys scrambled well."
Pakinga-Manhire had a great game, with the momentum generated from the first-fives, McCrea said.
"The whole backline, once they got a bit of go forward, some width, they scored some nice tries."
McCrea is pleased with how the team has come together in the last four weeks of games, and will want to finish off well when they travel to Masterton to meet Wairarapa Bush this coming Saturday.