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Oxygen Sensor Upstream for Subaru WRX, Impreza, WRX STI

SKU: 1005011804478713-Default Title
Default Title
€49,64
-38% €79,43 €49,64

The IWOKPHD Oxygen Sensor Upstream is a precise, direct-fit replacement designed for Subaru enthusiasts who demand accurate engine management and better driving efficiency. Specifically engineered for Subaru Impreza models from 2008–2013, Subaru WRX from 2015, and Subaru WRX STI from 2014–2021, this upstream O2 sensor delivers reliable readings that help the ECU balance air and fuel for smoother idle, improved throttle response, and reduced emissions. Built as a heating-type sensor with a piezoelectric sensing element, it responds quickly to changing exhaust conditions, enabling faster adaptation and more stable performance across varying driving conditions. It aligns with OEM references including 234-9034 series and 22641-AA510/AA720 codes, ensuring a faithful fit and dependable operation. Brand credibility comes from IWOKPHD’s commitment to offering robust aftermarket parts that meet or exceed OEM expectations.

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

  • Restore accurate oxygen readings to your engine control unit, helping optimize fuel trim, improve fuel economy, and reduce emissions over time.
  • Use as a proactive replacement when diagnostic codes point to a failing upstream sensor, or as part of routine maintenance to maintain smooth idle and consistent power delivery.
  • Before ordering, verify compatibility by checking the part numbers: 234-9034, 2349034, 234 9034; 22641-AA510, 22641AA510, 22641 AA510; 22641-AA720, 22641AA720, 22641 AA720. If unsure, share the Part Number or original photos for confirmation—only the original part guarantees a perfect fit.

Product specifications

  • Brand: IWOKPHD
  • Sensor Type: Piezoelectric
  • Type: Heating Type
  • Part Numbers / OEM No.: 234-9034, 2349034, 234 9034; 22641-AA510, 22641AA510, 22641 AA510; 22641-AA720, 22641AA720, 22641 AA720
  • Applications: For SUBARU IMPREZA 2008-2013; For SUBARU WRX 2015; For SUBARU WRX STI 2014-2021
  • Measuring Range: Derived from listed OEM references for respective models
  • Resolution: 22641-AA720
  • Sensitivity: 22641-AA510
  • Hysteresis: For SUBARU WRX STI 2014-2021
  • Linear: For SUBARU WRX 2015
  • Origin: Mainland China
  • OEM No.: 234-9034, 2349034, 234 9034

Package includes:

  • 1 pcs

Warnings/Reminders

  • Please check the picture and the part number carefully to ensure you bought the right part for your car.
  • If you cannot confirm which item fits your car, please send the Part Number or the Original product photos to us for confirmation before ordering.
  • The only way to be 100% sure the part will fit your vehicle is to check your original part. We will check for you and reply within 24 hours.

Trust and reliability matter when upgrading your Subaru. Providing quality and trusted service since 2002 at intercyprus.com