  We use the Vector formulation to evaluate vector and axial-vector exchange
contributions to the O(p^4) weak Chiral Lagrangian. We recover in this
framework the bulk of the contributions found previously by Ecker et al. in the
antisymmetric formulation of vectors and axial-vectors, but new interesting
features arise: i) most of our results are independent of Factorization and ii)
novel contributions to non-leptonic kaon decays, proper of this formulation and
phenomenologically interesting, are found. The phenomenological implications
for K -> pi pi (pi) and radiative (anomalous and non-anomalous) non-leptonic
kaon decays are thus investigated and found particularly relevant.
