This Vibrant retail oxygen sensor weld bung is a single mild steel M18 x 1.5 threaded unit intended for welding into exhaust or plumbing to accept a standard O2 sensor. Sold as an individual retail pack, the bung is a straightforward fabrication component and carries a one-year limited warranty. The description identifies it as a standard oxygen sensor bung in mild steel.
Vibrant Standard Oxygen Sensor Weld Bungs Mild Steel (M18 x 1.5 thread) - Retail Pack of 1 pc.