[Guest]

I have a bung welded for the O2 sensor and need to plug it up. What size bolt/thread pitch(?) do I need?

TIA,
Brian

 

[Guest]

You can buy a plug designed to close up an o2 sensor bung. Mine came from K&N (the air filter people). Talk to your local ******* V8 speed shop, they should be able to get one

Rob_O

 

[Boost Junkie]

18-mm x 1.5 thread pitch. The Walker part number for a plug is 35299. You can buy them at NAPA stores.