hinchcliffe

At the first track day of the year and my O2 popped out, stripped. What thread is the sensor hole I need to locktite a screw in place.

fraggle

M18 x 1.5. Same as some spark plugs.

hinchcliffe

Oh I'll by a metric plug in case I need it. Thanks for the idea. I'm at the super Walmart looking for loctite and a wire to run through a bolt I borrowed so I don't lose it on track. I think the bung is boogered too because the bolt was M18 and now is a bit rounded itself.

I'll pull the exhaust and chase the thread next week. With straight exhaust and no O2 I'll run rich tomorrow oh well.

Lizard928

Most spark plugs are M14 x 1.25.

All O2 sensors are M18 x 1.5

Mrmerlin

autozone has drain plugs that will fill the hole,
and it is a 18 x 1.5