O'Gara's conversion gave the Lions a 10-point cushion and after replacements Matthew Rees and Shane Williams joined the fray, they earned a second in the 69th minute through their dominant scrum.
Williams, who won Olympic gold in Athens with Matthew Pinsent, James Cracknell and Ed Coode, clinched the 2006 world coxless four title with Reed, Hodge and Alex Partridge.