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The Genuine Subaru OEM Oxygen A/F Sensor (Part #22641AA52A) is a factory-original air-fuel ratio sensor designed specifically for the 2010–2012 Subaru Legacy GT. As a direct OEM replacement, this sensor ensures your engine management system receives precise oxygen readings for optimal fuel delivery, emissions performance, and fuel economy — exactly as the factory intended.
| Subaru Part Number | 22641AA52A |
|---|---|
| Part Type | Air-Fuel Ratio (A/F) / Oxygen Sensor |
| Sensor Position | Upstream (Pre-Catalyst) |
| OEM / Aftermarket | Genuine Subaru OEM |
| Application | 2010–2012 Subaru Legacy GT |
| Engine | 2.5L Turbocharged (EJ255) |
This Genuine Subaru OEM A/F Sensor (22641AA52A) is confirmed to fit the following vehicles:
2010-2012 Subaru Legacy GT
Always verify your vehicle's VIN and trim level before ordering to confirm fitment. When in doubt, reference Subaru part number 22641AA52A against your existing sensor.
This sensor is a direct OEM replacement and installs in the factory location using the stock wiring harness connector. An oxygen sensor socket (typically 22mm) and anti-seize compound are recommended for removal and installation. Torque to factory specification. Professional installation is recommended if the original sensor is seized in the bung due to heat corrosion. Always clear ECU fault codes after replacement and perform a drive cycle to confirm proper sensor operation.
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