To provide a method for attaching a probe 6 to an exhaust gas treating device 1 which is particularly characterized by the fact that its production is simplified and narrower tolerance can be achieved and a better alignment in a receptacle opening can be achieved.

In the method for installing the probe 6 to the exhaust gas treatment device 1 which has at least one ceramic insert body 3 fixed in a metallic housing 2 by using a bearing mat, a receptacle opening 7 penetrating through the housing 2 and the bearing mat 5 and into the insert body is formed to receive the probe 6 after the insert 3 is inserted into the housing 2 and fixed to it by the bearing mat 5.