SOM

EXHAUST MANIFOLDS FOR INTERNAL COMBUSTION ENGINES; CATALYTIC EXHAUST GAS CONVERTERS FOR ENGINES; THERMAL EXHAUST MANIFOLD REACTORS FOR ENGINES; ELECTRIC HEATING RESISTORS FOR HEATING EXHAUST GAS, FUEL-BURNING BURNERS FOR HEATING EXHAUST GAS; EXHAUST GAS PIPES FOR ENGINES; EXHAUST MANIFOLDS FOR ENGINES PARTICULARLY OF SHEET METAL, EXHAUST MUFFLERS; INTAKE MUFFLERS; MUFFLERS FOR GAS LINES; DIAPHRAGM PRESSURE CELLS FOR ADJUSTING THE DAMPING CHARACTERISTICS OF MUFFLERS; VALVE HEADS FOR ENGINES, VALVE SEATS FOR ENGINES