Having won the first leg 2-1, Kim Sang-sik's Vietnam held their nerves to overcome Thailand at the Rajamangala Stadium.

Pham Tuan Hai gave Vietnam the lead after eight minutes with Ben Davis equalising for defending champions Thailand in the 28th minute.

Supachok Sarachat put Thailand ahead in the 64th minute but Weerathep Pomphan's sending off in the 74th minute was followed by an own goal from Pansa Hemviboon in the 82nd minute as Vietnam regained the advantage.

Nguyen Hai Long then sealed the title with his strike deep into time added on at the end of the second half.