ACDelco Oxygen Sensor - 12683553 Part #: 12683553 Line: ACD ACDelco Oxygen Sensor 1 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): 10 Inch Overall Length (mm): 254mm Hex Size (in): 7/8 Inch Output Signal Range (V): 5 Volt Heated: Yes Show More Show Less