ATK O2 OXYGEN SENSOR BUNG M18 X 1.5 Notched Weld on add O2 SENSOR Bung 304 Steel

High quality weld in bungs with the round tube curve notch (also called "coped") into the bottom so it lays nicely into your round tube for precise welding.

Thread: M18X1.5

Material: Stainless Steel 304

Quantity is 1 single bung