M12 Long Reach Sparkplug with proturding electrode for such vehicles as Honda Civic Type R and Suzuki Swift Sport. The lineup is equivalent NGK No. 8 and No. 9 heat values. New series of plugs inherits the best from existing M series and features Ruthenium Alloy Electrode to provide a reliable spark for all vehicles, including vehicles with increased boost or lightly tuned vehicles. On top of extended lifetime, use of Ruthenium alloy allows a better fuel burn, resulting in quicker throttle response, smoother idle and better cold starts.