Codimension-2 fibrators are
n
n
-manifolds which automatically induce approximate fibration, in the following sense: given any proper mapping
p
p
from an
(
n
+
2
)
(n+2)
-manifold onto a
2
2
-manifold such that each point-preimage is a copy of the codimension-2 fibrator,
p
p
is necessarily an approximate fibration. In this paper, we give some answers to the following question: given an
n
n
-manifold
N
N
which is a nontrivial connected sum, when is
N
N
a codimension-2 fibrator?