Exhaust gas system for an internal combustion engine, comprising at least one component which limits an exhaust gas flow volume by way of an outer wall and, on an inner side of the outer wall which faces the exhaust gas flow volume, supports at least one shielding element (64, 64', 66, 80), wherein an intermediate space (65, 67) is formed between the outer wall and the shielding element (64, 64', 66, 80), further comprising at least one first exhaust gas treatment unit with an upstream inlet region and a downstream outlet region, and at least one second exhaust gas treatment unit with an upstream inlet region and a downstream outlet region, and a connecting housing which is connected to the downstream outlet region of the at least one first exhaust gas treatment unit and the upstream inlet region of the at least one second exhaust gas treatment unit, wherein the connecting housing provides one component, carrying a shielding element (64, 64', 80), wherein the connecting housing comprises a first housing element with an inlet opening and an outlet opening, wherein the downstream outlet region of the at least one first exhaust gas treatment unit is connected to the connecting housing in the region of the inlet opening, and the upstream inlet region of the at least one second exhaust gas treatment unit is connected to the connecting housing in the region of the outlet opening, wherein the connecting housing comprises a second housing element which, with the first housing element, encloses a connecting volume, through which exhaust gas can flow, and wherein the outer wall comprises the first housing element or/and the second housing element, wherein: - at least one shielding element is provided on an inner side of the second housing element facing the connecting volume, in a region which lies opposite the inlet opening, or/and - at least one shielding element is provided on an inner side of the second housing element, facing the connecting volume, in a region which lies opposite the outlet opening, or/and - at least one shielding element (64, 64') is provided on the inner side of the second housing element facing the connecting volume, in a region which lies opposite a transition region formed between the inlet opening and the outlet opening, or/and - at least one shielding element is provided at the first housing element in the region of the transition region, characterized in that - at least one first connecting moulding (68, 72, 82) which is directed towards the outer wall and is connected fixedly to the outer wall is provided on the at least one shielding element (64, 64', 66, 80), or/and at least one second connecting moulding (76, 84) which is directed towards the at least one shielding element (64, 64', 66, 80) and is connected fixedly to the at least one shielding element (64, 64', 66, 80) is provided on the outer wall, and - that at least one shielding element (64, 64', 66, 80) comprises an outer edge region (70, 74) which is positioned at a spacing from the outer wall. - at least one shielding element is provided on an inner side of the second housing element facing the connecting volume, in a region which lies opposite the inlet opening, or/and - at least one shielding element is provided on an inner side of the second housing element, facing the connecting volume, in a region which lies opposite the outlet opening, or/and - at least one shielding element (64, 64') is provided on the inner side of the second housing element facing the connecting volume, in a region which lies opposite a transition region formed between the inlet opening and the outlet opening, or/and - at least one shielding element is provided at the first housing element in the region of the transition region, - at least one first connecting moulding (68, 72, 82) which is directed towards the outer wall and is connected fixedly to the outer wall is provided on the at least one shielding element (64, 64', 66, 80), or/and at least one second connecting moulding (76, 84) which is directed towards the at least one shielding element (64, 64', 66, 80) and is connected fixedly to the at least one shielding element (64, 64', 66, 80) is provided on the outer wall, and - that at least one shielding element (64, 64', 66, 80) comprises an outer edge region (70, 74) which is positioned at a spacing from the outer wall.