The NGK direct-fit oxygen sensor for Pontiac G8 (2008–2009) replaces the factory unit and provides continuous closed-loop OBDII feedback to the engine control unit to help maintain correct air-fuel ratio, engine performance and emissions. It features advanced ceramic sensor technology with a 3-stage contaminant-resistant plasma jet and deposit-trap overcoat to protect the element from contamination and improve resistance to failure.
NGK Pontiac G8 2009-2008 Direct Fit Oxygen Sensor