Downstream Oxygen Sensor Replacement by AA Ignition - Compatible with Subaru Vehicles - 2014, 2015, 2016, 2017 Forester, 2015-2017 WRX - Replaces Parts 234-4988, 234-5178, 250-241160, 250-25125

Downstream Oxygen Sensor Replacement by AA Ignition - Compatible with Subaru Vehicles - 2014, 2015, 2016, 2017 Forester, 2015-2017 WRX - Replaces Parts 234-4988, 234-5178, 250-241160, 250-25125

• DOWNSTREAM OXYGEN SENSOR - This O2 or Lambda sensor measures the amount or proportion of oxygen mixed in the fuel of your vehicle which is essential in the proper operation of your catalytic converter. The vehicle then determines whether it is necessary to adjust for it to perform properly.
• COMPATIBLE REPLACEMENT FOR SUBARU VEHICLES - 2014-2017 Forester | 2015-2017 WRX |. A lot of people buy the wrong oxygen sensor because of the wrong plug and length of the sensor. Please make sure to check your old sensor to see if the plug and pins are alike or better than the whole sensor itself.
• REPLACES PART# 234-4988, 234 4988, 2344988, 234-5178, 234 5178, 2345178, 250-241160, 250 241160, 250241160, 250-25125, 250 25125, 25025125, usually found on popular Forester and WRX vehicle models, including years 14, 15, 16, and 17. This oxygen sensor is for the downstream sensor of the vehicle.
• OEM FIT, QUALITY & FINISH - This replacement 02 Oxygen Sensor is a direct replacement for the Oxygen Sensor part# 234-4988 and will fit, work and function like the original part or even better. The downstream oxygen sensor can easily be located in the exhaust pipe behind the catalytic converter.
• LIFETIME WARRANTY - This replacement Oxygen Sensor from AA Ignition comes complete with a lifetime warranty. If the part ever fails on your Forester and WRX, simply contact us for a replacement. Save time and money by replacing this part yourself. See our website for full details.