The Fleet boss made over 65 appearances for Orient between 2004-2007 in a spell that included promotion to League One.
Speaking to Kent Online, McMahon said: “I’m looking forward to it. I loved my time there.
“It’s a fantastic club and it’s something I never envisaged, going back there to manage, especially as I still consider myself fairly young at 34.
“It’s a great challenge and I’m looking forward to taking our team there. We go there in good form and we’re looking to put a performance on and do what we do best.”
Ebbsfleet head into the clash on the back of four straight wins and will be looking to close the gap between themselves and the play-off places to just two points.
With their recent form and ambition in mind, McMahon insists that there is no fear for his side as they aim to show their quality.
“I’ve got very good players, they’ve got some good players and we’re both in the same place,” he added.
“There’s nothing for us to fear. It’s about us putting our best foot forward and respecting the opposition but showing people we’re a decent side as well.”
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