Ferebory Dore volleyed Congo in front and Thievy Bifouma drove in from a rebound to make it 2-0 either side of DR Congo efforts that hit the bar.
In a 16-minute spell DR Congo's Dieumerci Mbokani slotted in to give them hope, Bolika fired in an equaliser and Joel Kimuaki headed in a third.
Mbokani rounded off the win, stroking home after a counter-attack.
LINEUP, BOOKINGS (2) & SUBSTITUTIONS (6)
Congo
- 01 Mafoumbi
- 18 Baudry
- 21 Babélé
- 04 Moubhibo
- 06 Bissiki
- 08 N'Dinga Booked
- 07 Oniangué
- 05 Bouka Moutou (Ondama - 84' )
- 12 Litsingi (Gandzé - 84' )
- 13 Bifouma Koulossa
- 10 Dore (Malonga - 74' )
Substitutes
- 02 N'Ganga
- 03 N'Ganga
- 09 M'boussy
- 11 Ondama
- 14 Gandzé
- 15 Douniama
- 16 Massa
- 17 Malonga
- 19 Malonga
- 20 Binguila
- 22 Ndzila
- 23 Mavoungou
Congo DR
- 01 Muteba
- 02 Issama Mpeko
- 14 Zakuani (Kimwaki - 50' )
- 17 Mongongu
- 03 Kasusula
- 18 Cedrick (Kebano - 66' )
- 22 Mbemba Mangulu
- 06 Makiadi Booked (Munganga - 89' )
- 11 Bolasie
- 19 Bokila
- 09 Mbokani Bezua
Substitutes
- 04 Oualembo
- 05 Munganga
- 07 Mulumbu
- 08 Kage
- 10 Kebano
- 12 Mabele
- 13 Kabananga
- 15 Kimwaki
- 16 Kudimbana
- 20 Mabidi
- 21 Mubele
- 23 Mandanda