Compare Maximum number of 4 items selected ACDelco Oxygen Sensor - AFS138 Part #: AFS138 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): 15-3/4 Inch Overall Length (mm): 399mm Hex Size (in): 7/8 Inch Heated: Yes Show More Show Less