Need to replace 02 sensor, bank 1, sensor 2, in 2002 Lexus GS300, but don't know if bank 1 is the first 3 cylinders from the front of the car (left side) or the back 3?
if its like six cylinders its on the right side with you facing the fan belt
Sensor one is in the exhaust headers. Sensor two that you mentioned is after the catalytic converter. Double check which one you need.
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