o2 bung thread pitch?

[Grandprixpaul]

I have to get a bung to weld in for my oxygen sensor im using the one wire o2 from the origional engine and that was a 4.3 for my autometer air fuel gauge. Anyone know i cant even find it in the shop book.

 

[jmt455]

You're right; the thread size wouldn't be in the service manual.
I'd bring the sensor to a good auto parts store and match it up to a bung.

 

[565bbchevy]

I think the O2 thread size is 18mm x 1.5 but you might have to get the bung from a performance shop (Jegs,Summit,etc)

 

[jrm81bu]

I think the O2 thread size is 18mm x 1.5 but you might have to get the bung from a performance shop (Jegs,Summit,etc)

You are correct on the thread. Check your local Napa store. We carry them part number 36339.