Downstream Rear Air Fuel Ratio O2 Sensor for Subaru Legacy Outback
Upgrade your Subaru Legacy or Outback with a reliable downstream rear air-fuel ratio (O2) sensor tailored for 2013–2018 models equipped with the 2.5L H4 gasoline engine. This oxygen sensor monitors the exhaust’s oxygen content to help the engine control unit (ECU) precisely balance fuel delivery, optimizing combustion, reducing emissions, and preserving catalytic converter efficiency. Designed as a direct-fit replacement, it integrates with the vehicle’s exhaust system to deliver accurate lambda readings, restoring smooth idling, responsive acceleration, and improved fuel economy as the sensor ages and readings drift. With multiple OEM and cross-reference numbers—22690-AA96A, 22690-AA960, 22690-AA900, 22690AA960, 22690AA900, 22690AA96A, 234-4907, 2344907—this sensor aligns with a wide range of listings for easy replacement. Built with a heating element and a precise sensing mechanism, it delivers fast response across operating temperatures while maintaining long-term reliability. Made by IWOKPHD in Mainland China, this sensor is a dependable choice for restoring proper exhaust sensing and performance.
Benefits & Tips
- Restore proper air–fuel balance: replacing a degraded downstream O2 sensor helps the ECU maintain optimal fuel trims, reducing unnecessary fuel consumption and lowering emissions.
- Improve drive feel and diagnostics: expect steadier idle, smoother transitions, and fewer erroneous check engine codes related to oxygen sensing.
- Compatibility with confidence: the part’s multiple OEM and cross-reference numbers simplify verification across listings for Subaru Legacy and Outback models from 2013–2018.
Product Specifications
- Brand: IWOKPHD
- Model/Compatibility: Subaru Legacy and Outback, 2013–2018, 2.5L H4 - Gas
- Sensor Type: Piezoelectric
- Measuring Range: Downstream Rear Probe Air Fuel Ratio (Lambda / O2)
- OEM No.: 22690-AA96A
- Cross References: 22690-AA96A, 22690AA96A, 22690AA96A, 234-4907, 2344907, 22690-AA960, 22690-AA900, 22690AA960, 22690AA900
- Type: Heating Type
- Origin: Mainland China
Package includes:
- 1 x Oxygen Sensor
Warnings / Reminders
- Please use the vehicle fitment information provided in the listing to confirm compatibility with your exact Subaru model and year.
- If you are unsure which item fits your car, please send the Part Number or a photo to us to confirm before ordering.
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