Parker Hannifin PD Steel Test Port and Diagnostic Equipment Quick Coupler with Female Pipe Thread

Worked great. Fit the Comp U Chek fitting on my Cummins Engine.

It’s the right fitting for connecting to the diagnostic ports on John Deere PowerTech engines

This product will make life so much simpler.

item as described in ad

It's a compucheck fitting used in many diesel trucks for fuel pressure testing. Works good