If the NGK and Bosch part numbers are the correct ones for your car,
then there shouldn't be any questions as to them working for you. After
all, BMW does NOT make spark plugs, it just sources them from a vendor,
i.e., NGK or Bosch to its specifications.
Want a laugh? The BMW dealer just today quoted me $280 for new spark
plugs fitted to an e39 M5. That's *just* for fitting new spark plugs.
Oh, and he also told me it's $200 for a new fuel filter.
Jeez, Service II is bad enough without this...
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