Lewis played 45 minutes of the encounter against the side in a largely impressive first-half display which saw the All Whites go in at the interval 4-0 up.
The hosts and defending champions were blown away inside the opening 30 minutes of the encounter, leading to a couple of half-time changes as New Zealand prepared for the final.
The New Zealand Under-23s team is now just one step away from earning a spot at the Tokyo Olympics after making the final of the qualifying tournament in Fiji.
The All Whites will now take on the Solomon Islands in the final, who they already defeated 4-2 in the group stages, on Saturday at Churchill Park in Lautoka, kick-off 3pm local time (4pm NZT, 4am BST).
