M18X1 5 Stepped Notched Mounting Fittings Replacement Parts Review

O2 oxygen sensor bung was made of 304 stainless steel easy to weld. The size of our oxygen sensor plugs is M18 x 1.5 thread, fit for most of standard O2 sensors.Bungs are machined with M18-1.5 threads and have a recessed step for easier welding flush with a surface. Designed to adding a 02 sensor in any place you need one . Great for custom exhaust installation,headers,down pipes etc. These o2 sensor bungs are ideal for welding into aftermarket exhaust to give you somewhere to mount an o2 sensor. Just drill a hole and weld these on. Be sure to use a little anti-sieze on the plugs if you use those. These mild steel bungs are great for adding oxygen sensors to your exhaust system. They can also be used for replacing rusted, or stripped out, factory bungs.