  We revisit the status of Lepton Flavor Violating (LFV) \mu e qq contact
interactions from the view point of \mu - e -conversion in nuclei. We consider
their contribution to this LFV process via the two mechanisms on the hadronic
level: direct nucleon and meson exchange ones. In the former case the quarks
are embedded directly into the nucleons while in the latter in mesons which
then interact with nucleons in a nucleus. We revise and in some cases
reevaluate the hadronic parameters relevant for both mechanisms and calculate
the contribution of the above mentioned contact interactions in coherent \mu -
e -conversion in various nuclei. Then we update the existing upper bounds and
also derive new ones for the scales of the \mu e qq contact interactions from
the experimental limits on the capture rates of \mu - e -conversion. We compare
these limits with the ones derived in the literature from other LFV processes
and comment on the prospects of LHC searches related to the contact \mu e qq
interactions.
