Blue Crown Plugs?

[Dave in Boise]

Hi All,

I have some old Blue Crown plugs and was considering putting them into my Model A Coupe.. Does anyone know of a cross reference between Champion and Blue crown for fitment and heat range?

I don't have the numbers on the Blue Crowns handy, but can get them later if needed.

Thanks as always!

- Dave in Boise

 

[40Dave]

I have experience with Blue Crown plugs years ago and they had a high failure rate in several vehicles. Perhaps the quality has improved now. However, I personally would not use them in my vehicles