Stripes on 43n spark plug

[Ken Edmunds]

How many stripes should there be on a 67 Big Block 43n spark plug?
Thanks, KEn

[Joe C.]

Three *NM*

[Ken Edmunds]

Re: Three

Thanks Joe.
Ken

[Dave S.]

I'll say Four

I have many sets of 43N's from the 60's and 70's and they all have 4 equal size green rings (stripes).

[Jeffrey S.]

Re: Stripes on 43n spark plug

Ken:
43N plugs produced in '67 for your car had 4 thin green bands. Later versions produced after about 1976 had 3 thin green bands and one thick green band at the top. Hope this helps.
Jeff

[William O.]

Re: Stripes on 43n spark plug

I have a sent in the box that have four, I can not find a date on the box.

[mike cobine]

Re: Stripes on 43n spark plug

Four thin ones are correct for the '60s.

One thick and three thin are much later.

[William O.]

Re: Stripes on 43n spark plug

These are in the box,with 4 lines.

[Jeffrey S.]

Re: Stripes on 43n spark plug

William:
The date should be on one of the small flaps at the end of the box. There is a year (2 digits) and a "clock" with the months in the circle starting with the month they were produced. If the first number in the circle is a 4 then they were produced in April (at least the boxes were, anyway).
Jeff

[William O.]

Re: Stripes on 43n spark plug

The date if this is what I am looking at is 12 72'with 4-2443at the bottom.