Need the part number for o2 sensor for 2003 camry V6

I need to sale my father's car which is a toyota camry 2003 V6.


It has a check engine 0031 : Bank 1 Sensor 1.


Can anyone tell me what is the part number corresponding to this O2 sensor?


Thank you very much.

I think it's Denso 234-4064 can anyone confirm?

Bank 1 sensor 1 is the O2 Sensor on the rear bank (bank1) on the headers beside the firewall. Hard to get to. Part number 234-4064 seems to be the right one. 234-9047 was given by others as a replacement but i think the only difference is wire lenght.