NGK Laser Iridium replacement plugs for BMW N55, S55, N63, and S63 engines. They are one step colder than N55 plugs and factory S55 plugs and suggested for higher boost E85, water/meth injection, and/or upgraded turbocharger applications across all late model turbo BMW models. We suggest setting the gap down to 0.020", or 0.022” if running a stage 2 map on the N55 engine.
- Genuine NGK Laser Iridium Spark Plug
- 1 Step colder than the factory fitted spark plugs fitted to N55 & S55 engines
- 1 Per box. Please order 6 for N55 & S55 and 8 for N63 & S63.
These spark plugs are for the following BMW engines;
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