My euro engine has a label on it with spark plug rec.

Says
Bosch W7D

Seems the US engine takes bosch W8D

I ordered
NGK BP5ES

I found a cross ref table

http://www.spark-plugs.co.uk/pages/technical/boschw5a-y6dc.htm

says the bosch W7D translates into a different NGK BP6ES

It would seem the NKG equiv to the bosch is the 6ES

Will the 5ES not work as well?

I wonder if Rusty will exchange them for correct part

Really is quite hard to buy Euro parts even if you add a note that the engine is a Euro & if any parts are different to update..

I would assume its best to install the recommended plug...

Should I return them/ get correct...is there big diff in these plugs?
Does my engine run w a cooler plug?

Seems higher NGK number is cooler

http://www.ngksparkplugs.com/techinfo/spark_plugs/partnumberkey.pdf

Would my engine at 196K be ok or better w a hotter plug?


Thanks

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83 500 SEC Euro 198K