Not sure if its the only answer, but the EB has the larger terminal and it is fixed. I know this because I bought some and as it turns out can't use them on my outboard because plug boot is too small for the terminal.
BUHW has more copper in the metal.
They are interchangeable. Difference between the two :ZFR6K-11 is a standard NGK plug where as IZFR6K-11 is the Iridium version.
8 is hotter than 9 (toolmanx3)
Basically they are for different climate/riding conditions.
heat range. 7 is a "hotter" plug. That means it transfers more heat to the cylinder head during operation.
Yes, Only difference is the plug heat rating. The Plug will run a little colder and may foul easier or more frequent.
NGK Insulators's population is 3,272.
ngk BPMR4A
Copper: NGK 5858 (XR4); Iridium: NGK 7189 (XR41X).....
ngk BPMR7A
NGK-BR8ES or NGK-B8ES
- ngk ilkar7b11