STACEY Hosking scored more than half the holders' tally as they cruised into the final.
The Australian was in imperious form as Northwich gave Wilmslow a taste of what they will face in North Two West next term.
Blacks were in determined mood from the start.
But they had to wait until the midway point of the opening period before skipper Steve Campbell sliced through the defence to set up Fred Taylor for the first score.
Hosking, who is developing into a fine kicker, converted from wide out and five minutes later stretched Blacks' advantage when Wilmslow strayed offside.
And Northwich wrapped up the tie five minutes before the break when a flowing three quarter move set up Hosking for the second try of the game.
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This time his conversion attempt hit the upright.
Wilmslow made a fist of the fight in the second half and were rewarded through a Bob McCallam three-pointer.
Chris Heywood rises highest to win the ball at a lineout
But the hosts' defence was resolute under pressure and, as the game entered the last quarter, Hosking converted his second penalty.
Assistant coach Danny Townsend gave early second half starts to hooker Jed Hill and debutant second row forward Will Oultram.
Both added fresh impetus, but it was a superb blind side break from stand off Richard Dale that capped an impressive display.
Dale danced through the narrowest of gaps, sprinting 50 metres to set up Chris Heywood for the try of the match, converted once more by that man Hosking.
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