Last week, I have replaced the Iridium Spark Plugs on my E36 ! They really made a big difference on improving the enginee performance! It gives me the feeling of driving a new car!!!
6 pcs of NGK IRIDIUM MAX for M52 Motor Sports Enginee!
Replacing the Spark Plugs...
Iridium IX series plugs for standard engines have an ultra-fine Iridium center electrode that ensures excellent ignitability and improved response to acceleration and power. Iridium MAX series plugs, meanwhile, have a platinum tip on the external electrode discharger, providing the same or longer life than platinum plugs!
The model number for my E36 323i is BKR6EIX - 11P.