Young's ally for that partnership - Tom Bruce - fell next, also for 49, with Ferguson having him caught in the deep by Nethula. It was the start of a beautiful combination as the pair linked up to cripple CD's middle order.
From 128-2, CD's next eight overs saw them collapse to 135-7. Ferguson remarkably claimed 3-28 on a ground where seamers usually get tonked, while Nethula's figures somehow went from 4-0-19-0 to 10-3-24-2.
As the pair restricted CD, returning all-rounder Mark Chapman also cashed in, taking the wickets of Dane Cleaver, Adam Milne and Seth Rance as the hosts floundered.
Doug Bracewell made 40, but took a long time to get going, and CD were eventually rolled for 197 – one of their lowest totals in years at Pukekura Park.
Auckland weren't troubled by the chase. Jeet Raval (47) and Glenn Phillips (63) added 84 for the first wicket, before Chapman struck with the bat as well, hammering 47 from 36 balls.
With 17 overs and six wickets to spare, Robbie O'Donnell flicked a six over the square leg rope, earning Auckland their first one-day title since 2013.
Central Districts captain Will Young pointed to the Auckland bowlers as the reason for their victory.
"Hats off to Auckland – they bowled particularly well, their big dogs Lockie and Tarun led the way and the part-time spinners bowled really well on a wicket that assisted them."
Auckland captain Craig Cachopa – the only player left from the 2013 title-winning side -
was delighted to see his plans pay off.
"It's easy being a captain when the boys back you up the way they do. They still had to execute well with the ball and take our catches, and everyone did today."
"We came out today and delivered."