Counties Manukau established an overwhelming territorial dominance that would give them a 19-8 halftime lead, and nothing typified North Harbour's woeful effort more than the final act of the half.
From a penalty in front of the posts, Steelers' wing Frank Halai hesitated and gave Harbour time to regroup before taking the initiative with a moderately paced tap kick. Harbour's lack of urgency allowed Halai to plough over the line.
Prop Simon Lemalu was heavily involved in the first two tries. He burrowed over from a ruck for the first, and then showed a nice piece of ball-playing to initiate a long range move continued by Halai and finished by Tim Nanai-Williams.
Harbour's response in the half was a try that revealed soft Counties Manukau defence against the home side's only meaningful attack in the first 40 minutes.
Both sides suffered early injury blows. Counties Manukau captain DJ Forbes departed with a deep cut around his eye after copping a boot from a team-mate and North Harbour lost first five-eighths Michael Hobbs to a leg injury.
Counties Manukau 27 (S Lemalu, T Nanai-Williams, F Halai, M Tatafu tries; B Kerr 2 con, pen)
North Harbour 15 (C Aporo 2 tries; B Hall pen, J Semple con). Halftime: 19-8.