John McGraw

Can somebody tell me what thread the Front O2 sensors on a F body are? I pulled my pipes of today for some work, and the O2 sensor was galled pretty badly. I got it out, but will need to chase the threads in the bung before putting the new one in. I had coated this one liberaly with never-seize when I put it in, so I am unsure why it galled so bad! I am not very good at guessing metric threads, and don't want to just start buying taps until I find the right one!


Regards, John McGraw

felton316

Its the same size as the spark plug thread reamers they sell at autoparts store. 14mm I think? Most of the spark plug thread chasers come with two sizes on it.

oange ss

iTrader: (50)

18mm x 1.5mm

rao

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+1 and it is the same size as the larger spark plugs.

Juiced2000SS

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John McGraw

Thanks guys, picked up a thread chaser tonight and it cleaned right up.