NTK Direct Fit Oxygen Sensor - 21502 Part #: 21502 Line: NTK NTK Direct Fit Oxygen Sensor 1 Year Limited Warranty Number Of Wires: 1 Thread Size: M14-1.50 Terminal Type: Blade Connector Shape: Round Terminal Gender: Male Technology: Narrow Band Hex Size (mm): 22mm Attachment Method: Screw-In Overall Length (in): 5-1/2 Inch Hex Size (in): 7/8 Inch Output Signal Range (V): 0 To 1 Volt Heated: No Show More Show Less