The NGK OE-style 4-wire air/fuel sensor for Acura CSX (2006–2011) is a direct-fit replacement that restores accurate oxygen sensing to the engine control unit, supporting proper air–fuel ratio control. This OE-type four-wire sensor provides the factory electrical interface for a simple swap and consistent, dependable readings for fuel management.
NGK 2011-06 Acura CSX OE Type 4-Wire A/F Sensor