NTK Direct Fit Oxygen Sensor - 21063 Part #: 21063 Line: NTK NTK Direct Fit Oxygen Sensor 1 Year Limited Warranty Number Of Wires: 4 Thread Size: M18-1.50 Terminal Type: Blade Connector Gender: Male Connector Shape: Square Terminal Gender: Female Technology: Narrow Band Hex Size (mm): 22mm Attachment Method: Screw-In Overall Length (in): 9 Inch Hex Size (in): 7/8 Inch Number Of Terminals: 4 Output Signal Range (V): 0 To 1 Volt Heated: Yes Show More Show Less