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The NGK OE-style 4-wire air/fuel sensor for Subaru Legacy (2010–2012) is a direct-fit replacement that restores accurate oxygen sensing to the engine control unit, helping maintain proper air–fuel ratio and stable fuel trim. This OE-type four-wire sensor provides the OEM electrical connection for straightforward installation and consistent sensor readings.
NGK 2012-10 Subaru Legacy OE Type 4-Wire A/F Sensor
