Practically Classics Forum

What is the difference between Champion spark plugs N4 and N4C. Can these be mixed in the same engine ?
Roy of the Rover

This is a link to a page on Champion's website detailing what the numbers on their plugs mean.
http://www.championsparkplugs.com/spark ... cturerID=2

Those aren't complete codes for the plugs so it is hard to know exactly what you have.

Cheers Terry - doesn't seem to be much difference.
Roy

TerryG wrote:This is a link to a page on Champion's website detailing what the numbers on their plugs mean.
http://www.championsparkplugs.com/spark ... cturerID=2

Those aren't complete codes for the plugs so it is hard to know exactly what you have.

If memory serves the C stands for copper this refers to the material used for the core of the plug.

Champion also did "CC" plugs with double copper cores - Unipart sold these as "performance" plugs under the Surefire name

I really need to get a life...............