On the side of the block by the fuel filter theres a plug in the oil galley, would like to know what the thread size is.
Thanks

 

Got a pick?

I can't remember seeing the plug, but most are NPT.

Dave

 

A little more info this is where you hook the oil pressure switch in to run the aux. fuel pump. And there's an adapter togo from 1/8" npt to the size in the block. The plug has a 5MM allen which may not mean anthing.

 

I just installed an aux pump the came from bd power and it had the adapter in it. It is boss thread, which is different than npt. Sorry I don't know the size. Hydraulic hose outfits have lots of adapters that go from o-ring boss to whatever your going to use.