Here is the difficult to find Cummins Oil feed adapter fitting 

This is needed to do your turbo swap or when changing to a -4AN feed line

This will fit most 12 valve and Common-rail Cummins engines!

These are made from high quality steel and zinc plated for corrosion resistance.

Buyer must check his / her feed ports to make sure they are not tapped to 1/8" npt which is much smaller than this fitting.

Ask questions before purchasing!!!