chevrolet tahoe Catalytic Converter

The chrvrolet tahoe catalytic converter is a device used to keep control over the exhaust emissions during the engine operation. The converter uses a catalyst that reacts with the exhaust gas coming out of the cylinder and converts these harmful gases to more friendly gases like carbon dioxide and nitrogen along with the water.
http://www.theautopartsshop.com/auto+car-usa+parts/chevrolet+tahoe+catalytic-converter.html