Check Engine - Catalytic Converter?

[dssnosher]

Checked my car at mechanic and he said that catalytic converter isn't performing the way it should be. Its a 98 GS400 with 270,000km on it. What can happen if i keep driving without replacing the converter? In case i need to replace it, would aftermarket one work fine?

[drew028]

my engine light comes and goes for my cats. Dirty cats can take away from the cars performance depending on how bad. It can also effect your o2 sensors in the long run. Id replace them with the factory ones. Cost more but less work and no welds to rust. Cheapest direct fit i found was here http://www.car-stuff.com/mmparts/lexus-gs4..._converter.html. If anyone know where to get a better price please post.

[drew028]

ALSO, your old cats are worth money. When i do mines i got a guy to give me 120 each.. $160 each new that will the cut the cost way down and make it affordable.

[dssnosher]

ALSO, your old cats are worth money. When i do mines i got a guy to give me 120 each.. $160 each new that will the cut the cost way down and make it affordable.

I've been calling places to get quotes but i am not sure if i got 2 or 1? One place tells me its 2 another 1Where did you find OEM cats for $160?