NGK WR5IX 7510 Spark Plug Iridium IX

The NGK WR5IX is part of the NGK Iridium IX range.NGK Iridium IX is the performance upgrade from a standard plug. The 0.6 mm fine-wire iridium centre electrode needs less voltage to fire and produces a more concentrated spark, giving quicker starting, crisper throttle response and steadier idle, particularly on high-compression, tuned or high-revving engines. Iridium is around six times harder than platinum and wears very slowly, so the gap stays accurate far longer than nickel. The tapered ground electrode reduces quenching of the flame kernel. Fitted in place of the equiv