Drain plug thread and pitch size.

[grandnat_6]

Does anyone know the thread size and pitch for the engine oil pan drain plug? Mine was drilled out and retreaded to a larger size but always leaks. Hoping to helicoil it to the factory size. Thought I had the old drain plug but can’t find it.

Thanks!

 

[TexasT]

https://www.autozone.com/external-engine/oil-drain-plug-gasket

Might be easier than what you are proposing.

 

[salvageV6]

Rock Auto lists this as the size, no idea if it's correct but Dorman usually gets it right.
" Pilot Point; Thread Size; 1/2"-20; Head Size: 9/16" "