5Pair O2 Oxygen Sensor Bung M18x1.5 Exhaust Lambda Boss Nut Weld on 304Stainless
O2 Oxygen Sensor Bung+Plug Kit. 5x Oxygen Sensor Nut Bung Stepped. -Easy to weld on. -Designed to adding a O2 sensor in any place you need. 5x Oxygen Sensor Plugs. -Universal fit for STANDARD OXYGEN SENSORS with M18 X 1.5 Thread.