GT35R Coolant thread size

[syrushcw]

Just like the title says what is the coolant thread size in my google search I found 2 different sizes 14mm and 1/4NPT just wondering what it actually is.
Thanks

 

[JusMX141]

Every 30R/35R I've seen had 14mm threads in the water ports just like our MHI turbos. The standard T3 Garretts with water ports use NPT threads, even some of the ball-bearing hybrids sold by PTE and Turbonetics which use a machined standard T3 center housing.

 

[syrushcw]

It is a Garrett should of mentioned that so 1/4NPT?

 

[JusMX141]

There are two possibilities within the Garrett branding- if you have a true GT35R with a 35R center housing, it will be 14MM and your stock banjo bolts will work.