Oxygen Sensor Upstream Lambda for Subaru XV Crosstrek, Forester 2.5L-H4
Upgrade your Subaru’s emission control with the IWOKPHD Oxygen Sensor Upstream Lambda, a purpose-built upstream O2 sensor designed for Subaru models including XV Crosstrek, Forester 2.5L-H4, and Impreza variants. This heated, piezoelectric sensor reads the exhaust’s oxygen content before the catalytic converter, enabling the engine control unit to fine-tune the air-fuel ratio in real time. The result is cleaner exhaust, steadier idle, and improved fuel efficiency—especially after cold starts when the system is learning optimal fuel trim. With compatibility across multiple OEM references (234-9109, 22641-AA610, 22641-AA710, 22641-AA71A, 22641-AA66A, 211200-4430, 22641AA640, 22641AA66A, 22641AA670, 18081, 75-4282, 24851), this sensor is a practical, plug‑and‑play solution that respects the engineering intent of your Subaru’s engine management system.
The sensor is built as a heating-type unit with a piezoelectric sensing element, designed to deliver fast warm-up and reliable readings across a wide operating range. This helps ensure the engine can quickly enter closed-loop control, reducing unnecessary fuel consumption and lowering emissions during those crucial first minutes after startup. Originating from Mainland China, the sensor is crafted to align with the dimensions and electrical characteristics of the listed Subaru applications, giving you a trusted, OEM-aligned performance at a compelling price.
Benefits & Tips
- Maintain optimal air-fuel ratio for cleaner emissions, better throttle response, and improved fuel economy.
- Faster warm-up reduces fuel waste and helps the engine reach efficient operation more quickly after startup.
- Designed to match the specified OEM references, making installation straightforward for compatible Subaru models.
Product specifications
- Part numbers / OEM references: 234-9109, 22641-AA610, 22641-AA710, 22641-AA71A, 22641-AA66A, 211200-4430, 22641AA640, 22641AA66A, 22641AA670, 22641AA610, 22641AA710, 22641AA71A, 2349109, 18081, 75-4282, 24851
- Sensor Type: Piezoelectric
- Type: Heating Type
- Measuring range / compatibility codes: 22641AA610, 22641AA710, 22641AA71A, 2349109, 18081, 75-4282, 24851
- Hysteresis years: 2012, 2013, 2014
- Repeatability: FUEL RATIO O2 sensor
- OEM No.: 234-9109
- Origin: Mainland China
- Application notes: For 2013 Subaru Forester 2.5L-H4; 2012-2013 Subaru Impreza 2.0L-H4; 2013 Subaru XV Crosstrek 2.0L-H4; plus various 2014 Impreza/Impreza variants listed in the product data
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 be sure 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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