Koso North America O2 Sensor Bung Kit - Bung/Plug/Washer - BG001813

Weld-in O2 sensor bung lets you incorporate O2 sensors into any exhaust system; 18 mm x 1.5p. O2 sensor bung plug works with any O2 sensor port; 18 mm x 1.5p. Aluminum bung plug washer works with any 18 mm O2 sensor bung plug.