Jan is correct:
I had to "talk" the button-pusher at my local auto parts store into supplying
spark plugs for a 1984 Subaru 1800 simply to get N-9Y plugs.
Years ago in the auto section of the local Seattle newspaper I read that
Champion was very worried about being able to continue manufacturing spark
plugs...period!
Apparently, they were running out of the particular clay they used for their
ceramic (at the time) and they had not yet found an appropriate replacement.
I wonder if they ever did?
Jim
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