Holding a 2-1 victory from the first leg, Samson Siasia's boys piped the Congolese 2-1to qualify for the championship.
Nigeria’s Dream Team have qualified for the 2nd African U-23 Championship which will hold in Senegal later in the year.
Coach Samson Siasia's boys piped the Congolese 2-1 in the first leg and battled to a 0-0 draw with in the return leg in Pointe-Noire on Sunday, August 2 to qualify for the championship.
With their first leg advantage, the Dream Team did not sit back to defend and was the livelier of both teams in the first half.
The Dream Team will be looking to seal qualification to the men's football event in the 2016 Summer Olympics at the championship.
The top three teams at the Championship in Senegal will be Africa's flag bearers at the games next year while a fourth team will play off against an Asian team.
Senegal, Algeria, Zambia, Egypt, South Africa and Tunisia are the teams that will competing with Nigeria at the U-23 African Champoinship.
Speaking after the game, Siasia said his boys played like true heroes and he is proud of them as they have also made him a proud coach and Nigerian.
"Playing a match like this is always difficult, but then I knew our best tactics for this game was to go all out and attack, because if they scored a goal against us, we would be out of the race," Siasia said.
"My boys did what I told them, but then we missed a couple of clear chances that are unpardonable. However, we did the job and we are into the African U-23 finals."