It is implemented in the exhaust system to reduce the emissions and the current model is a single bed converter using a three way catalytic system. The catalytic coating of this catalyst is made of platinum and rhodium and it has the potential of decreasing the emissions of nitrogen oxides, hydrocarbons and carbon monoxide. Street and lab testing of catalytic converters is expensive and cumbersome and thus when there is suspicion of failure, should be diagnosed and repaired by a dealer or an authorized emission testing center. Located beneath the car and just ahead of the engine, the converter should be checked for signs of leakage, rust or other signs of damage whenever the car is being serviced for purposes of undercarriage maintenance. If any damage is seen, it cannot be unbolted and replaced; it must be cut out with a torch because it is welded to the exhaust pipes-really a replacement job that must be handled by a dealer service department or a muffler shop that has the capability to cut out the converter.