I lost that oil banjo male part and I need to know thread and how long I should buy. I don't know about banjo fittings.

All I found on google was M12 x P1.25 mm, is that even close ?

 

The oil supply fitting on the top of the TD04H-15G turbo is M10 x 1.25.

Be aware that the banjo fitting supplied by greddy is considerably thicker than what you normally see in US-made hardware, so it may be difficult for you to find just a bolt that will fit into the banjo head that you have.

This may be a good time for you to upgrade to proper teflon-lined AN style hoses.

 

I Try to find that banjo bolt from local hydraulic shop.

I live in Finland so I prefer JIC over AN but that's a good idea though

Thanks

 

It may be easier to just replace the whole line. See this link for part numbers:
https://www.miataturbo.net/forum/t13306/