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Originally Posted by Lil bastard
Stick w/ oem.
Exotic metal plugs are mostly marketing hype and the only real supposed benefit is longevity. Longevity isn't really a plus on a car that's driven for performance or where the plugs are so easily changed, especially on a car where the mileage spec is already 60k mi. to begin with.
Aftermarket plugs may not be indexed properly and there is no universal standard on heat range. One Mfgr.'s #6 does not necessarily equal another's #6.
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Bosch, aftermarket? Beru isn't made by Porsche so that would make them aftermarket also. The Bosch plugs suggested aren't Platinum or Iridium, like that would even matter. You won't go wrong Bosch (~$50) or Beru (~$90)...just about a $40 difference in price for six spark plugs.
