I was wondering where I could get an O2 plug to cover the O2 sensor bung on my buschur catback since I have a 2006 IX. Cause I am pretty sure the O2 sensor is on the cat and not on the mid-pipe of the cat-back exhaust.

What size plug do I need?

 

Picked my plug from Advanced Auto , you can get it at any local auto store. As for the size I'm uncertain on that one.

 

Alright cool thanks. The plug brand name is Dynomax Hego O2 plug 18 x 1.5 right?

 

That should be right. Its an 18mm O2 plug or oil drain plug.

 

Autozone or any autoparts store should have them.

 

You might use antiseeze if you think you may need to use the hole in the future.