New Zealand only needed 48 minutes on the fifth day to complete a crushing victory as England, set a mammoth 463 to win, were bowled out for 209, with Henry's six-wicket haul in total in the second innings giving him superb match figures of 11-109.
New Zealand dominated England in all aspects at the Oval, with both Glenn Phillips and Henry Nicholls, replacing retired great Kane Williamson, hitting hundreds as they bounced back from a 115-run defeat at Lord's to level this three-match contest at 1-1.
England made five changes to their side - including three debutants - with captain Ben Stokes and paceman Gus Atkinson both omitted for breaking a team curfew while celebrating victory at Lord's.
The duo could return for next week's series decider at Trent Bridge, Nottingham.