Urea delivery tank module

A liquid reductant dosing module for a combustion exhaust treatment system (5) is disclosed comprising: (a) an enclosed reservoir (33) comprising a top, a bottom, one or more sides, an inlet (25), and an outlet (27, 31); (b) a heater (32) disposed in the reservoir; (c) a filter element (36) disposed between the outlet (27, 31) and the liquid reductant in the reservoir; and (d) a heat sink member (35) in thermal contact with the heater (32), disposed between the filter element (36) and the outlet (27, 31).