IMO, Ford OEM parts are the best.

 

Simple answer to your question is Motorcraft
All the sensors too, only Motorcraft

 

If they’re available motorcraft/international. I know that the Napa ones are made by dorman, they had the dorman mark molded into a set i put on last summer.

 

I have watched a few YouTube videos of pro-mechanics who have been using the Dorman gaskets because the wiring harness is molded into the gasket, that prevents the wire harness from getting trapped under a bolt head and being pinched/shorted out

 

On my 2002 F250 7.3 the left bank went out. I did a lot of research and found that most of the people had the same problem. The wire harness inside the valve cover or outside was the problem. When I took off the valve cover on the left bank I saw the the plug of the inside wire harness slipped out half way. I pushed it back in, put a heat resistant cable tie around the plug to push up the lock and my truck was fixed. Obviously, the heat warpped the plasic plug lock so the plug could slip out. Easy fix.