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The NGK OE-style 4-wire air/fuel sensor for Acura RSX (2005–2006) is a direct-fit replacement that returns accurate oxygen sensing to the engine control unit, supporting proper air–fuel ratio control. This OE-type four-wire unit offers the factory electrical connection for an uncomplicated swap and consistent sensor feedback for fuel management.
NGK 2006-05 Acura RSX OE Type 4-Wire A/F Sensor
