On some vehicles, yes.
No
how many catalytic converters are in a nissan quest?
i just had my car in for a service, they told me catalytic converters were bad and there are 2 of them , so 2.
There are 4 catalytic converters. 2 each on driver and passager side.
2
No, planes don't have catalytic converters.
YES
2
2
2
are catalytic converters covered by a warrenty
A Ford Escape has three catalytic converters. It is known that the top two catalytic converters and their coils are costly.