02 Sensor Bung and Plug

• 18mm thread
• comes as a kit - bung and plug
  

If you need to add an extra sensor in your exhaust for an aftermarket wideband or for a custom exhaust set-up, you will need one of these. We personally install these on all of the cars we tune here at our shop, it allows us to hook up our in-house wideband sensor for an accurate air/fuel ratio for tuning.