WARNING: This page is about a different car, the 2013 Jeep Patriot and 2013 Jeep Compass. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Oxygen Sensor
Courtesy of CHRYSLER GROUP, LLC
The upstream oxygen sensor threads into the outlet flange of the exhaust manifold.
The downstream heated oxygen sensor threads into the system depending on emission package.