  Standard Model may allow an extended gauge sector with anomaly-free flavored
gauge symmetries, such as $L_{i} - L_{j}$, $B_{i} - L_{j}$, and $B - 3L_{i}$,
where $i,j=1,2,3$ are flavor indices. We investigate phenomenological
implications of the new flavored gauge boson $Z^{\prime}$ in the above three
classes of gauge symmetries. Focusing on the gauge boson mass above 5 GeV, we
use the lepton universality test in the $Z$ and $\tau/\mu$ decays, LEP
searches, LHC searches, neutrino trident production bound, and LHC
$Z\rightarrow 4\mu$ searches to put constraints on the
$g^{\prime}-M_{Z^{\prime}}$ plane. When $L_1$ is involved, the LEP bounds on
the $e^{-}e^{+} \rightarrow \ell^{-}\ell^{+}$ processes give the most stringent
bounds, while the LHC bound becomes the strongest constraints in the large
$M_{Z^{\prime}}$ region when $B_{i}$ is involved. The bound from $Z\rightarrow
4\mu$ productions, which is applicable for $L_2$-involved scenarios, provides
stringent bounds in the small $M_{Z^{\prime}}$ region. One exception is the
$B-3L_2$ scenario, in which case only a small region is favored due to the
lepton universality.
