(2 Sets) O2 Oxygen Sensor Weld On / Weld In Bung Plug & Nut Cap Kit M18 x 1.5

Type: Oxygen Sensor Bung / Curve Notched Adapter. Material: Bung----Stainless Steel 304, Plug----Iron. ⑤ Complete continuous weld around entire bung base circumference. ☑ Verify bung orientation allows proper component installation and service access.