FIELD: mechanical engineering; exhaust systems f internal combustion engines. SUBSTANCE: through insulator is designed for passing at least one electric conductor through metal housing of engine exhaust system, particularly through housing of catalyst converter with electric heating. Housing is provided with metal bushing is zone of insulator. Bushing is welded to housing. Conductor passes through bushing on which protection electrode is mounted. EFFECT: higher corrosion resistance of through insulator. 19 cl, 8 dwg
