O2 Steel Exhaust Lambda Oxygen Sensor Boss Nut & Cap Bung Kit M18 x 1.5～
Universal fit for STANDARD OXYGEN SENSORS with M18 X 1.5 Thread. -O2 Oxygen Sensor Bung+Plug Kit. 1x Oxygen Sensor Nut Bung Stepped. -Designed to adding a O2 sensor in any place you need. For Oxygen Sensor.