The 2013 Ford Explorer typically has four oxygen sensors: two upstream (pre-catalytic converter) and two downstream (post-catalytic converter). However, the exact number can vary based on the engine type and exhaust system configuration. It's always best to consult the vehicle's service manual or a dealership for the specific setup of a particular vehicle.
That would depend on what year of Ford Explorer and which engine you have ( my 1995 Ford Explorer with the 4.0 liter OHV , V6 engine has ( 2 oxygen sensors )
The 2013 Ford Explorer has 24 valves.
4
2
On a 1995 Ford Explorer : There are ( 2 ) oxygen sensors ( I believe there is one sensor in the outlet of each exhaust manifold )
there are 4 o2 sensors
My Chilton repair manual - engine wiring schematic shows ( 2 ) heated oxygen sensors for the 1993 Ford Explorer
3
My 1995 Ford Explorer with 4.0 L OHV has 2 oxygen sensors (Helpfull)
There are 2 oxygen sensors.
The 2013 Ford Explorer's engine produces 290 hp @ 6500 rpm.
According to the 2013 Ford Explorer Owner Guide : ( 18.6 U.S. gallons )