It is threaded into the exhaust system after the catalytic converter.
The 1997 Ford Aerostar oxygen sensor is screwed into the exhaust pipe. It is about even with the rear of the oil pan.
Ford 2007 edge, how can repair rear sensors on bumper
There are two oxygen sensor for Mitsubishi Outlander. Front Oxygen Sensor and Rear Oxygen Sensor
On the back down pipe. It is better gotton from the underside as there is no room to get it from the top.
The rear oxygen sensor looks at the percentage of oxygen in the exhaust after it has passed through the catalytic convertor. The computer compares this with the reading from the front sensor to tell if the catalytic converter is working correctly.
The 2007 Ford Taurus has 38.1 in. of rear head room.
The 2007 Ford Expedition has 39.1 in. of rear leg room.
The 2007 Ford Focus has 53.6 in. of rear shoulder room.
The 2007 Ford Explorer has 55.5 in. of rear hip room.
The 2007 Ford Mustang has 31.0 in. of rear leg room.
The 2007 Ford Expedition has 59.9 in. of rear hip room.
The 2007 Ford Expedition has 39.8 in. of rear head room.