Upstream O2 Sensor for Subaru Forester 2014-2018 and WRX 2015-2021 22641-AA650 Direct Fit
Upgrade your Subaru with a precise upstream O2 sensor designed for Subaru Forester 2014-2018 and WRX 2015-2021. The 22641-AA650 upstream oxygen sensor is a heated, piezoelectric sensor that monitors the exhaust gas before the catalyst, delivering accurate readings that enable your engine to maintain an optimal air‑fuel mix. By matching the OEM specifications, this sensor helps improve fuel efficiency, reduce emissions, and prevent drivability issues caused by faulty oxygen sensing. Easy to install as a direct replacement, it restores proper fuel trimming and engine performance, ensuring smoother starts and consistent power delivery.
All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.
Benefits & Tips
- Restores accurate oxygen readings to optimize fuel trim, improving MPG and reducing idle fluctuations.
- Heated sensor design helps the unit reach operating temperature quickly for reliable readings during cold starts.
- Replace with the correct OEM-matched part numbers (22641-AA650, 22641AA650, 234-5178, 2345178, 27004, 18174) to ensure compatibility and long-term reliability.
Product specifications
- Brand: IWOKPHD
- Part numbers: 22641-AA650, 22641AA650, 234-5178, 2345178, 27004, 18174
- Sensor type: Piezoelectric
- Type: Heating Type
- Application: Subaru Forester 2014-2018; Subaru WRX 2015-2021
- Origin: Mainland China
- Notes: Upstream O2 sensor (before the catalytic converter)
- Repeatability: Easy Installation
Package includes:
- 1 pcs
Warnings / Reminders
- Please check the picture and the part number carefully to make sure that you bought the right part for your car.
- If you cannot determine which item fits your car, please send the Part Number or the original product photos to us to confirm before order.
- The only way to be 100% sure that the part will fit your vehicle is to check your original part. We will check for you and reply within 24 hours.
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