I want to put some NGK spark plugs in my BMW E30 320i 1990 but don't know which one's to use, does any one know?
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I have the current catalogue at work. I shall have a look for you tomorrow.
But this may help in the meantime: (a bosch to ngk conversion chart)
www.spark-plugs.co.uk/pages/technical/boschd6b-w4e...m
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Its a ZGR5A on those motors.
You can check it yourself:
www.ngk.co.uk
Then click on 'Part Finder'
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