What is the heat range of a ngk d8ha sparkplug

Ngk 7112d8ha plug is a standard plug which is in the center of the heat range
you can determine the heat range of any plug by looking at the ceramic insulator inside the plug
if the ceramic is shallow or close to the end it is a cold plug --for use in hot running engines
what you have will have the ceramic insulator a bit further down inside the plug -- normal engine operation
and hot where the ceramic insulator goes well down into the plug body-- use for fouling engines and oil burning engines
the rating comes from the ceramic ability to transfer heat away from the plug electrode
for stories on plug heat ranges , go google and type in-- spark plug heat ranges and explanations --