2.3L spark plugs
Here's the thing, I wanna change my spark plugs and I found out a box of motorcraft spark plugs by chance.
The only problem is the part # (AWSF42C) doesn't fit my 2.3L ranger according to the motocraft spark plugs part list (AGSF32FMF4 or AGSF32FMF6) I found on the internet and confirm by other websites.
And when I think about it, I don't know what spark plugs my dad put onto the engine 3 years ago.
Can it be critical for the engine if "wrong spark" plugs had been put ?
I compared those 2 spark plugs according to the motocraft spark plugs model number identification and here what I found out:
A= thread diameter : 14 mm
G= gasket seat: 0.750" or 0.708"
SF= spark plugs type: conical seat and suppressor (charbon)
3= spark plugs heat range: cold
2= spark plug tip configuration: extended power tip
FM= spark plug characteristic: finewire platinium center electrode and nickel plate shell
F4= flat pack display carton w/ 4 spark plugs
A: 14 mm
SF: same as above
2: same as above
C: copper core electrode
We can see they're almost the same but I don't know if those spark plugs could cause a critical damage to the engine.
So I'm waiting for your point of view.