B1 S1 Sensor Location

Can Someone Tell Me, Is The B1 S1 Oxygen Sensor On The Passenger Side Of A '97 Ford Explorer With 5.0l V8?
Thanks

Bank 1 is actually on the drivers side. Sensor 1 is before the Catalytic Convertor.

bank one is passenger side. The sensor should be located just below the manifold where the ehaust pipe bolts up.

My bad, you are right. Passenger side it is.