 
       
        2JZ-GE Billet Upper Water Neck
RAD Industries Billet Upper Water Neck for the 2JZ-GE head which will allow you to adapt to AN fittings on your GE engine.
 -16 ORB female threads so you can use a union fitting for either -16 or -20 for your upper radiator hose. 
The upper water neck uses an o-ring to seal to the head so no gaskets are needed. 
It has two ports on the bottom, a 1/8" npt and a 1/4" npt for a sensor or for coolant plumbing options on your build. 
Installation:
When installing this upper water neck you need to remove the small M8 studs from head and install the water neck with the supplied stainless Allen hardware.
   
 
    
     
                  
                
              
                       
                       
                       
                       
                       
                       
                       
                       
                       
                       
                       
                       
                       
                       
                       
                      