The upstream is screwed into the front of the catalytic converter, while the downstream is screwed into the pipe after the converter.
It has two.
The 5.2L has two oxygen sensors.
2 sensors
There are 3 oxygen sensors and all 3 should be changed for the best performance and fuel economy. ON THE 1995 Ram there is only one O2 sensor on the cat
Two.
THERE ARE 2
2
It has four.It has four.
The only oxygen sensor is screwed into the front of the catalytic converter.
It only has 4
1995-1999 3.9L, 5.2L, and 5.9L Dodge Ram 1500 has two O2 sensors. One upstream (before cat) and one downstream (after cat).
Counterclockwise to remove, clockwise to tighten.