Technical Mopar spark plugs

I’ve got several boxes of mopar 62P plugs, and the reach and thread is same as the autolite 65s that I use in my early hemi. I have some books with cross reference but not for this plug. Anybody have a cross reference or any input concerning this plug.

 

Anybody. I’m guessing I need to post on a more of a dedicated mopar site.

 

I'll give you a bounce. Maybe @squirrel has a cross reference book that covers this he always seem to have good info in this sort of thing.

 

R42XLS is the AC crossover. A bit cold for a stock early Hemi, but probably ok for racing.

 

Thanks ******. And as always, I’m amazed and find squirrels responses fast with common sense and accurate and worth reading. Thanks to the 2 that have been there and done that and enjoy helping no matter how small or how big and detailed. And as far as ****** his common sense always prevails.

 

I wonder who makes those? Champion?


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AC is Albert Champion. Or was...

 

Were we going A/C to Mopar or Autolite.......I get soooo confused........

 

Champion made plugs for Chrysler -Mopar and that looks like a UN12Y Champion.

 

And Harley Davidson too. Well they did. I am not really up on the ultra late model stuff.

 

Part Number 2642493 (Mopar 62P) Champion N9Y's
This is what I found, seem to be for small block 60-70's Chrysler products/
KK

 

Actually was looking thru the uncle's race book with the iron 392....but found this......

 

Thanks stillrunners, I’m guessing N-13Y. And I would have never guessed that ngk has been around that long. I’m going to save that pic.

 

NGK is my go to spark plug. I use them in everything from the old Farmalls to the Harleys and our DDs.


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NGK's and Autolites are good. About 20 years ago, the Champion plugs were the only ones capable of holding up the longest with high output MSD ignition. But I am sure that things have changed...

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