3
2
2
2
There are 4 catalytic converters. 2 each on driver and passager side.
There is only one catalytic converter in every vehicle even the 1995 Nissan Quest. How many your car will need over the lifetime of the car is depends on the overall usage of the car.
2
4
2
3
There are two.
one
3
2 much money
2 front and rear