Oxygen Sensor for 2014-2018 Subaru Forester & More - Walker 250-25125

Walker Products 250-25125 oxygen sensor for the 2014-2018 Subaru Forester H4 2.0L and other vehicles measures the oxygen level in the exhaust gas. It sits upstream and monitors combustion efficiency through the air-fuel ratio.

• Measures oxygen levels to help fine-tune the air-fuel mixture and support fuel economy
• Determines the oxygen content of the exhaust gas to monitor the air-fuel ratio
• Coating prevents contamination and erosion of the electrode surfaces by combustion residue and particulates
• Electrodes made of a gas-permeable platinum layer
• Made for its specific application and position on the vehicle, giving the ECU the diagnostic feedback it requires

Quick facts

• Part: Walker Products 250-25125 oxygen sensor
• Fits: 2014-2018 Subaru Forester H4 2.0L and other vehicles
• Position: Upstream
• Condition: New

A failing sensor may show up as a rough-running engine, higher fuel use or a lit malfunction indicator light, and a different fault could produce any of those, so find the cause first. With the engine off and cool, look over the sensor, wiring harness and connector for physical damage; damage there can also shorten the sensor's life.

Fits

This oxygen sensor fits the 2014-2018 Subaru Forester H4 2.0L and the 2015-2020 Subaru WRX H4 2.0L.

Specifications

In the box

One oxygen sensor; the vehicle needs just one.

Product information is for general reference and may contain errors. See our Disclaimer.