West Ham moved three places up to fourth on 52 points from 30 games, one more than fifth-placed Chelsea and three ahead of sixth-placed Tottenham Hotspur and Liverpool in seventh. Wolves stayed 14th on 35 points.
West Ham also equalled the club’s Premier League record of seven away wins in a season and gave themselves every chance of breaking it with eight games remaining.
Jesse Lingard, Pablo Fornals and substitute Jarrod Bowen, who replaced the injured Michail Antonio, fired the Hammers into a 3-0 lead before Leander Dendoncker pulled one back for the home side in an action-packed first half.
Fabio Silva struck for the resurgent Wolves midway through the second but the home side were unable to make their late pressure count as the visitors held out in the closing stages.
