Sparkplug part numbers/info

[ChrisBurke]

Hey all,

Thought Id ask a few questions about spark plugs - Does any one know of a good (web) source of info on the different plugs, what the numbers mean, etc etc?

I know its an ADR standard these days to use 'R' type plugs for polution (BR8EG instead of B8EG) because of the resistor in them - but does anyone have any other info on the differences like what do the letters after the number relate to?

Cheers

[bistard]

Google is your friend,just type in "NGK Spark Plug Guide"
All will become very clear

[bigfatmat]

depends on the brand of plug generaly speaking the cross over two thread and size heat of spark resistor elctrode type

[T.W.R]

Something like this ?? This is a basic NGK identification chart