Help - What size NPT is this? Coolant Return line
 

Hey kids,

Changing my coolant supply and return lines to AN. Does anyone know what size this is tapped? I'm guessing it's NPT.

https://www.miataturbo.net/attachmen...ine=1343056334

Thank you!

Closer pic, please. And a caliper measurement of the OD of the smallest part of the male fitting threads.

Looks like 3/8 or 1/4, but could easily be something oddball.

I vote for 3/8, but you need to give us a closer picture with something to compare it to size wise. Tape measure, scale, calipers, etc.

is that a BEGi part?

yeah that looks like a begi water neck thing.

It's a BEGi part and it's 1/8th NPT! Who would have thought.

Do they still sell that water neck?

They do indeed. Call Stephanie at BEGi