1975 and later.
They where required for the 1975 model year.
The first year for Catalytic converters was 1975They were first required on all cars in 1975.
It is a federal law that catalytic converters are required on all cars built after 1975
1975?
Not unless it was originally equipped with a catalytic converter which is unlikely. If not, then NO it is not required.
19751975
1975
in 1975
1975
No, planes don't have catalytic converters.
1975
are catalytic converters covered by a warrenty