Correct. They are Ford's Auto Parts Division only. IIRC, the FTC didn't look kindly on FoMoCo buying Autolite and pulled the old "Anti-Trust" on em in the 50's.
Motorcraft does NOT make their own parts. They are made by other companies, for the Motorcraft name.
As for Filters (Air and Oil), I'll only use Wix (for my Jeep and our Mercury's).
EDIT: Stoney, Wix have always had better Oil Pressure results regardless of my AMC304 or 3.0L, 2.3L Ford engines. Might be something you consider for the future. I've tried them all and I found both Fram and Motorcraft to be sub-par.
i've done best with valvoline in my 289's and 5.0L's.
the shop race car, we used pennzoil in.
ya////as for OE parts. i laugh to myself when the guy with the toyota comes in and asks me if i use original toyota parts on his car.
i tell him that i use BETTER, then explain to him how all of the OE's farm those things out.
there are often differences though. honda uses bosch to make their o2 sensors. yet, if i buy a bosch o2 sensor for that honda, from napa, i'm pretty much guaranteed to get a CEL. order it from honda, they look identical, right down to the vanes in the nipple....but no CEL.