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KCPSG KCPSG is offline
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Join Date: Jun 2004
Location: Lafayette.Louisiana
Posts: 553
Garage
Here is the chart I found...
http://www.ngksparkplugs.com/techinfo/spark_plugs/partnumberkey.pdf

So according to this chart...8's are cooler than 7's etc. But I guess this does not carry over to Bosch plugs.

Are my BP8ES cooler than WR7DC?
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Phil

2005 GT3 Milltek Exhaust/ECU reflashed/OEM Short shift
1988 911 coupe (GP white) Turbocharged
1998 BMW 328i
Old 02-16-2007, 07:24 AM
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