Does anyone know where I can find a 16mm to 16mm x 1.5 thread double male adapter? And anyone know what size the water plugs are on the top of the head are (like the ones like the heater core water line are coming out of)?
I'm looking for a way to hook water up to my HE 351VE and I've been cussing the Cummins Engineers for going with such oddball sizes.

 

I went metric to JIC on all my water connections for my Garrett turbos. I have a feeling that the plugs in the head are 1/2" NPT, I don't think they are straight thread, but I could be wrong. Why not just tap into the hoses from the heater core, cut and splice and then you just use some 90 degree JIC's with hoses crimped on?

 

JICs? Where can I find them?

 

Go to any hydraulic shop, they should have an assortment of fittings and can make you hoses with the fittings you need crimped on. Finding Metric to JIC fittings was a challenge though. Call all the hydraulic shops in your area until you find them.