Exhaust Boss Nut Weld on in Steel M18 x 1.5 Thread O2 Oxygen Sensor Bung Stepped
Universal fit for STANDARD OXYGEN SENSORS with M18 X 1.5 Thread. O2 Oxygen Sensor Bung+Plug Kit. 1x Oxygen Sensor Nut Bung Stepped. Easy to weld on. Designed to adding a O2 sensor in any place you need.