ShovelheadKevin wrote: I'm soooooo confused!
Trying to make sense of my owner's manual plug recommendations  is making me

From what I've read here I guess for my '98 4.0 the APP103 is the current replacement plug for AGSF-22PP?

Also, what's up with the manual recommendation of "Cyls 1, 2 & 3 have a PG suffix...Cyls 4,5 & 6 have a P suff.". I mean...WTF????
I run 2 different temp plugs in my Harley, but that's to keep both cyls the same running temps.






Smart move, simple solution and the price is right. Go to Rockauto ( or the like), order the double plats or the iriduim, use the rebate which makes them cost a a bit over a buck, and be done with it.



Edit: rebate form..... https://www.autoliterebates.com/Home.aspx

Last edited on Sun Dec 17th, 2017 02:36 pm by CBB9M