ACDelco Oxygen Sensor - 12687606 Part #: 12687606 Line: ACD ACDelco Oxygen Sensor 2 Year LIMITED WARRANTY Number Of Wires: 4 Thread Size: M18-1.50 Terminal Type: Blade Connector Shape: Oval Terminal Gender: Male Attachment Method: Screw-In Overall Length (in): 16-3/16 Inch Overall Length (mm): 411mm Heated: Yes Show More Show Less