I had a 1996 German spec 2dr. Ordered plugs with vin number. Dealer supplied Bosch plugs. Serviced it at BMW with the new plugs and it seemed to have a misfire. When I looked at the plugs that came out of the car, those were ngk which was what was used on the 3.2l 4dr. Ended up buying a new set using the used NGK plugs as a sample. Car worked fine after that. Double checked if the car didn't in fact have a 3.2 engine instead of a 3l. Unfortunately it turned out I had the 3l which surprisingly worked with the more expensive NGK plugs one normally bought for the 3.2 engine.
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