After suffering their first defeat of the season in their last outing, Steve Bould's Under-18s got back to winning ways at West Ham.
Anthony Edgar had given the hosts the lead from the spot on the stroke of half time but two second-half goals handed Arsenal the victory.
Luke Freeman headed the visitors back on terms midway through the second half and substitute Roarie Deacon wrapped up the points five minutes later.
Subscribers can watch extended highlights of the victory now.Copyright 2014 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source 2 Oct 2008