A catalytic converter is an important component of your car that is mandatory for all gas-powered vehicles. The catalytic converter converts harmful gases that are emitted from your car into safer gases. It consists of ceramic honeycomb coated in precious metals that typically include Rhodium. Palladium, and Platinum. The harmful gases from your car first go into the catalytic converter where it gets converted into relatively safer gases before exiting through your car's exhaust. For example, carbon monoxide gets converted into carbon dioxide by reacting with oxygen in the catalytic converter before exiting through your car's exhaust.