A connection unit for an exhaust gas heater in an exhaust gas system of a combustion engine, comprising: - an electrically conducting connection element, elongated in the direction of a connection element longitudinal axis, having an inner connection region for connection to a heating conductor and an outer connection region for connection to an electrical supply line, - a carrier arrangement which surrounds the connection element, - an insulating arrangement which insulates the connection element with respect to the carrier arrangement, wherein the connection element comprises, between the inner connection region and the outer connection region, an insulating arrangement support region which is held on the carrier arrangement by means of the insulating arrangement, wherein the insulating arrangement support region comprises a first holding portion which widens radially in the direction away from the inner connection region towards the outer connection region, and a second holding portion which widens radially in the direction away from the outer connection region towards the first holding portion, wherein the carrier arrangement comprises a first carrier element, which is to be fixed to an exhaust gas system, and a second carrier element, wherein the first carrier element comprises, in association with the first holding portion, a first carrying portion which widens radially in the direction towards the second carrier element, characterized in that the second carrier element comprises, in association with the second holding portion, a second carrying portion which widens radially in the direction towards the first carrier element, and in that the first support element clamps the connection element together with the second carrier element. - an electrically conducting connection element, elongated in the direction of a connection element longitudinal axis, having an inner connection region for connection to a heating conductor and an outer connection region for connection to an electrical supply line, - a carrier arrangement which surrounds the connection element, - an insulating arrangement which insulates the connection element with respect to the carrier arrangement, wherein the connection element comprises, between the inner connection region and the outer connection region, an insulating arrangement support region which is held on the carrier arrangement by means of the insulating arrangement, wherein the insulating arrangement support region comprises a first holding portion which widens radially in the direction away from the inner connection region towards the outer connection region, and a second holding portion which widens radially in the direction away from the outer connection region towards the first holding portion, wherein the carrier arrangement comprises a first carrier element, which is to be fixed to an exhaust gas system, and a second carrier element, wherein the first carrier element comprises, in association with the first holding portion, a first carrying portion which widens radially in the direction towards the second carrier element, characterized in that the second carrier element comprises, in association with the second holding portion, a second carrying portion which widens radially in the direction towards the first carrier element, and in that the first support element clamps the connection element together with the second carrier element.