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Following this with interest.
Have a 2007 330i N53, what are the best plugs to use on a standard car, my local motor factor has quoted NGK ZKBR7AP-HTU which are 3 prong plugs.
buying a set today and would like to hear what you have used what BMW use, (I have asked my local main dealer they use NGK but would not tell me code or how many prongs)
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