Effective Catalytic Converter Replacement Programs for Gasoline-Powered Vehicles A Key Element of a Successful Mobile Source Emission Control Program

A number of countries with established motor vehicle emission control programs where
catalytic converters have been installed on gasoline-powered passenger cars and light-duty trucks
are now considering the implementation of catalytic converter replacement programs for older
vehicles that have damaged converters or for vehicles where the original converter was removed.
An effective replacement catalytic converter program for gasoline-powered vehicles is an
important element of a comprehensive motor vehicle emission control program. The
Manufacturers of Emission Controls Association (MECA) has prepared this White Paper on
converter replacement programs in response to a growing number of inquiries received from
government officials and others around the world for information about effective converter
replacement programs. The White Paper focuses on replacement converter programs regulating
the sale of new, replacement converters.
Passenger Cars and Light Trucks Contribute to Serious Urban Air Pollution
Problems
Pollution from gasoline-powered passenger cars and light-duty trucks (e.g., pick-up trucks
and small delivery vans) is a major contributor to urban air quality problems throughout the world. These vehicles, if left uncontrolled, emit high quantities of hydrocarbons (HC) and oxides