Weld O2 Oxygen Sensor Nut Bung – M18 X 1.5 Thread Mild Steel, Easy-Weld Lip

About This Product

If you're fabricating an exhaust system or adding a bung for an oxygen sensor on a project car, this M18 x 1.

5 mild steel nut is exactly what you need.

It's got the standard thread size that fits most O2 sensors, so you can weld it onto your exhaust pipe and screw your sensor right in without any adapter monkey business.

The mild steel construction makes it easy to weld – and it comes with a built-in lip that gives you a nice flat surface to run your bead, which is a huge help if you're not a pro welder.
Once it's on, it holds up fine to exhaust heat and vibration.

Whether you're doing a custom header, replacing a rusted bung, or just adding an extra O2 port for tuning, this little fitting gets the job done without fuss.

Small, cheap, and essential for anyone doing exhaust work.

Just make sure your pipe diameter and location works with the sensor length, and you'll be set.