Brand New 18 X 1.5MM 100% Stainless 02 Oxygen Sensor Bung and 100% stainless o2 Bung Plug.  You can compare to any other seller out there.  You will not be able to find a better pair.  Most have a zinc coated plug.  We used to sell the zinc coated plug by Vibrant  that had a 22mm socket head and they kept jacking the price up with an inferior product so we had our own design and the precision quality of the threads is incredible along with a 17mm socket wrench head and best of all full stainless.  Every socket set has a 17mm so much more common to find.

It is a CNC machined Stainless Steel weld on 02 Sensor Bung that are designed for adding a 02 Sensor in any place you need one . Great for Custom Exhaust , Headers , Down Pipes or for Adding a extra 02 Sensor for use with a Wideband. These are made of Stainless steel so they will not Rust. 

The thread is Standard 18mm which will fit Most OEM And Aftermarket Sensors including Bosch Units 

You Will Receive :  1- 18X1.5MM Stainless Bung & 1- Full Stainless o2 Bung Plug

The Bung Plug has a 17mm socket head for easily removal.  You will notice some people sell one with a allen head which is a horrible design as it will be very difficult to remove when the exhaust gets hot.  That design will get stuck and you will be unable to remove it.  With a 17mm socket head you will never have to worry about stripping it and being unable to remove it!  Always put anti-seize on the threads for easy removal later!

Free USPS First Class Mail shipping within the U.S.

UPS 2nd day Air for only $5 more!  Recommended if you don't want to rely on USPS taking their sweet time

You will NOT find a better combo than this period!

Thank you for shopping!