Compare Maximum number of 4 items selected Bosch Direct Fit Oxygen Sensor - 16451 Part #: 16451 Line: BOS Bosch Direct Fit Oxygen Sensor 1 Year Limited Warranty Number Of Wires: 4 Thread Size: M18-1.50 Terminal Type: Pin Connector Shape: Square Terminal Gender: Female Technology: Narrow Band Hex Size (mm): 22mm Attachment Method: Screw-In Overall Length (in): 15-7/8 Inch Hex Size (in): 7/8 Inch Heated: Yes Show More Show Less