He represented the Solomon Islands national football team on over 30 occasions, scoring a record 34 goals (including 7 against non-FIFA members). Menapi was arguably the most famous Solomon Islands footballer, after scoring twice for his country against Australia in a sensational 2–2 draw in the Oceania Nations Cup group match in 2004. The result was the only game in the competition that Australia did not win, and the result also ensured Solomon Islands' progression to the next phase at the expense of New Zealand. In that tournament, Menapi scored four goals in six games. Since Australia's exit from the Oceania Football Confederation, he is the all-time leading goal scorer for the OFC.