JO2 Mild Steel 1/2" Tall O2 Oxygen Sensor Bung Port Boss Nut Fitting 18mm

Dimensions:    18mm Standard O2 Port  Outside Diameter: 1"  Inside Diameter: 18mm Threaded  Height: 1/2" (.5")  M18x1.5  Material: Mild Steel  DISCLAIMER!!  We cannot be responsible for improper fitment.   It is standard for most vehicles to use 18mm ports/plugs, however it is your responsibility to verify dimensions to make sure that this part will fit your vehicle.   High quality mild steel is a much better choice than stainless steel for O2 sensor ports and plugs, as it will not contact weld together when heated. This allows you to remove the plug and/or O2 sensor as needed.