Hi,
I recently had this p0420 code come on my vehicle.
I took it to my mechanic and he told me that it is the passenger side exhaust manifold not working properly.
I have searched a couple of options and rockauto.com only lists exhaust manifolds for AWD
https://www.rockauto.com/en/catalog/...converter,5808

However, when I am looking for a part through Lexus OEM parts, it only gives me an option to choose a standard vehicle, not RWD vs AWD
https://parts.lexus.com/a/Lexus_2010...2420-1701.html

I am not sure these AWD manifold exhaust from rockauto would be compatible with my is 250c (RWD),
any input would be greatly appreciated.

Thank you