Enhance your vehicle's performance with the ACDelco Oxygen Sensor, designed specifically for exhaust bank 1 on 2016-20 Chevrolet and GMC models. The sensor, bearing the part number 12666612, ensures a precise fit and easy installation thanks to its direct fit feature, making it a reliable choice for your car's emission control system. Crafted with quality in mind, this oxygen sensor utilizes a female connector type for a secure and stable connection. It is not a vintage part, ensuring that you benefit from the latest in automotive technology. Trust in the reputation of ACDelco to keep your vehicle running efficiently.