Description:\nNGK Iridium IX Spark Plug - BR8ECMIX \nFeatures:\n--Ultimate spark plug technology and performance from the industry leader. \n--Iridium electrode is 25% smaller than a platinum electrode and 1/4 the size of a conventional nickel electrode. \n--Ultra-small diameter center electrode reduces voltage requirement and extends ignition system life. \n--New metal shell plating with enhanced anti-corrosion qualities. \n--Sold individually.\nSpecifications:\n--\nHeat Range: 8 \n--\nThread Size: 14 mm \n--\nType: Resistor \n--\nUnits: Each \n--\nWeight: 0.12 lbs \n--\nAlternate/OEM Part Numbers: 21030044, 3520 \n--\nPart Number: 37-BR8ECMIX (radhouse.co.uk)\nDescription:\n--Iridium IX Plug, 14mm Thread Size, 19mm (3/4\"") Reach, 13/16\"" (20.6mm) Hex Size, Gasket Seat, Resistor, Solid Terminal Nut, Compact Type, Low Angled Ground Electrode, Fine Wire (0.6mm) Iridium Center Electrode, Tapered Cut Ground Electrode, .031\"" (0.8mm) Gap, Heat Range 8.\nAdditional Information:\n--NGK Iri: