Subaru Rear O2 Sensor 2013-2019 Outback 2.5L

Factory issue OEM Subaru rear oxygen (O2) sensor.  Also known as an air/fuel ratio sensor.

A failed Oxygen Sensor will often have no noticeable symptoms beyond a check engine light, but it does cause your Subaru to operate inefficiently and produce higher emissions. The O2 Sensors on these cars are fairly close together but this rear sensor is just after the first Catalytic convertor in the system in the exhaust manifold.

Fits 2013-2019 Outback 2.5L