This is a billet steel restricted oil supply fitting for the drivers side of the P7100 injection pumps. This is generally used on p-pumped 24v engines, but can be used on any P7100 pump.

-4an line to M14x1.5 adapter

Restricted fitting to keep the pump from being flooded with oil when being supplied from the left side of pump.

Comes with sealing washer.

These are made in house at Contagious Diesel