The 2.5 has 2 O2 sensors (both on top of the engine) and the 3.5 has 4 O2 sensors (two on top, and two under the car).
four
how many o2 sensors on a ford e350 van 2003
2
It has 4 of them.
There are two oxygen sensors in a 2003 Sonoma V6 with a 4.3 liter. Prices for the sensors start at $69.95.
yes
In my experience, OEM sensors work better than aftermarket.
Exhaust pipes
My 2003 model has 4 sensors. Two are before the catalytic converters and two more after the cat converters..
YES
There are four o2 sensors on a montero sport.
Deffinatley 2 and maybe a 3rd one