West Ham maintained their 100% Europa Conference League record and secured a place in the knockout stage with victory over Anderlecht at London Stadium.
David Moyes' side still need a point from their final two games to confirm their direct passage to the last 16.
West Ham were too good for their visitors throughout, with Wolves loanee Fabio Silva barely making an impact for Anderlecht up front.
Benrahma's well-taken free-kick gave the hosts the lead before England World Cup hopeful Bowen drove home his third European goal of the campaign and his sixth in the last two seasons, joining Johnny Byrne and David Cross as the club's joint highest scorer in European competitions.