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The NGK OE-style 4-wire air/fuel sensor for Subaru Forester (2011–2013) is a direct-fit replacement that restores accurate oxygen sensing to the engine control unit, helping maintain correct air–fuel ratio and steady fuel trim. This OE-type four-wire sensor offers the factory electrical hookup for straightforward swapping and reliable sensor output.
NGK 2013-11 Subaru Forester OE Type 4-Wire A/F Sensor
