All Garrett Medium frame turbos, Xona,  and Borgwarner EFR turbos take this fitting for the water passage in and out.   They are M14 x 6AN, and come with aluminum crush washer.  
 
These can also serve as a fitting replacement for many Audi and VW OE turbos.
 
If you require something more low profile after adding the hose end, please see the Banjo fittings we have to offer to fit the same application.