Author Topic: spark plug nomenclature  (Read 1522 times)

Offline carlite65

  • Global Moderator
  • Hero Member
  • ****
  • Posts: 2411
spark plug nomenclature
« on: August 06, 2021, 03:22:58 PM »
can someone enlighten me on this please. what is the difference between autolite BF42----autolite BF42-b  and autolite BF42-c plugs. i see all three types on e-bay but am not sure of the differences. i am sure they are different otherwise they would not have that last letter.
5F09C331248

Offline J_Speegle

  • Administrator
  • Hero Member
  • *****
  • Posts: 24632
Re: spark plug nomenclature
« Reply #1 on: August 06, 2021, 05:12:38 PM »
Unless someone beats me to it believe one of the original Shop Tips has a page or two describing the differences for the Ford and other counter people at the time
Jeff Speegle

Anything worth doing is worth doing concours ;)