

NGK Iridium IX spark plugs, box of 4. Fine-wire 0.6mm iridium center electrode for a smaller, more consistent spark kernel and longer service life than copper.
Heat range 6 — stock heat range for most naturally aspirated and lightly boosted JDM fours and sixes.
Common applications: Nissan SR20DET, KA24DE, RB20DET / RB25DET, Toyota 2JZ-GTE (mild boost), Mitsubishi 4G63
Part #: BKR6EIX (NGK 6418) · Gap comes preset at 0.8mm — always gap to your engine's spec.
New, in original manufacturer packaging. Ships direct from our distribution partner.
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