NGK ITR4A15 Laser Iridium Spark Plug 5599

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Original equipment on many late model applications Iridium at the fine-wire center electrode and platinum at the ground electrode provides maximum durability and performance The pl atinum at the ground electrode adds extra protection against plug wear and gap erosion Thread Diameter 14mm Thread Pitch 1.25mm Seat Type Tapered Reach 17.5mm (.689") Hex Size 5/8" (16mm) Terminal Type Solid Overall Height ISO Gap.059" (1.5mm) Show more