NGK Iridium IX Spark Plug LFR7AIX

6 New NGK Iridium IX Spark Plug LFR7AIX # 2309, Iridium IX Plug, 14mm Thread Size, 26.5mm (1.04") Reach, 5/8" (16mm) Hex Size, Gasket Seat, Resistor, Solid Terminal Nut, Projected Tip, Fine Wire (0.6mm) Iridium Center Electrode, Tapered Cut Ground Electrode, .032" (0.8mm) Gap, Heat Range 7 It's an ideal choice for today's high-performance engines, using advanced materials built to last up to 20k miles under normal operating conditions.