Exhaust treatment assembly

The invention relates to an exhaust gas treatment assembly for an exhaust system of an internal combustion engine, comprising a housing having a circumferential wall and at least one bottom wall connected to the circumferential wall, at least one exhaust gas treatment unit being removably positioned from the housing in a housing interior delimited by the circumferential wall and the bottom wall, according to the invention, at least one bottom wall is a replaceable bottom wall detachably connected to the circumferential wall by means of a connecting device, said connecting device comprising, on the circumferential wall, a first connecting section extending substantially in the direction of the longitudinal axis of the housing and a first axial support section extending radially inward, the connecting device comprises, on the replacement bottom wall, a second connecting section which extends radially adjacent to the first connecting section substantially in the direction of the longitudinal axis of the housing