NGK IX Iridium Series plugs were designed specifically for the performance enthusiast. Fine wire center electrode ensures high durability and a consistently stable spark Iridium alloy has an extremely high melting point, perfect for today's high-tech, high performance engines Trivalent metal plating provides superior anti-corrosion and anti-seizing properties Corrugated ribs prevent flashover Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer Copper core aids in heat removal Triple seals prevent leakage MPN: TR5IX Specifications Warranty 1 Year Torque Specs Cast Iron: 10.8-18 lb. ft. Aluminum: 7.2-14.5 lb. ft. Brand NGK Heat Range 5 Longevity 50k Miles Resistor Yes Shell Thread Size 14mm Thread Pitch 1.25mm Seat Type Tapered Resistor Value 5K Ohm Reach 18mm (.709") Hex Size 5/8" (16mm) Terminal Type Solid Overall Height ISO Gap .039" (1.0mm) Center Electrode Material Iridium Type Fine Wire Size 0.6mm Projection Projected Ground Electrode Material Nickel Type Standard Shape Taper Cut Quantity 1 Fitment Automotive 2017 Chevrolet GMC 2016 Chevrolet GMC 2015 Chevrolet GMC 2014 Cadillac Chevrolet GMC 2013 Cadillac Chevrolet GMC 2012 Cadillac Chevrolet Ford GMC 2011 Cadillac Chevrolet Ford GMC Mazda Mercury 2010 Cadillac Chevrolet Ford GMC Hummer Lincoln Mazda Mercury 2009 Buick Cadillac Chevrolet Ford GMC Hummer Lincoln Mazda Mercury Pontiac Saab 2008 Buick Cadillac Chevrolet Ford GMC Hummer Lincoln Mazda Pontiac Saab 2007 Buick Cadillac Chevrolet Ford GMC Hummer Lincoln Mazda Pontiac Saab 2006 Buick Cadillac Chevrolet Ford GMC Hummer Isuzu Lincoln Mazda Pontiac Saab 2005 Buick Cadillac Chevrolet Ford GMC Hummer Isuzu Mazda Mercury Panoz Pontiac Saab 2004 Aston Martin Buick Cadillac Chevrolet Ford GMC Hummer Isuzu Mazda Mercury Panoz Pontiac 2003 Cadillac Chevrolet Ford GMC Hummer Isuzu Mazda Mercury Panoz 2002 Cadillac Chevrolet Ford GMC Mazda Mercury Panoz Pontiac 2001 Chevrolet Ford GMC Mazda Mercury Panoz Pontiac 2000 Cadillac Chevrolet Ford GMC Isuzu Mazda Mercury Panoz Pontiac 1999 Cadillac Chevrolet Ford GMC Isuzu Mazda Mercury Panoz Pontiac 1998 Chevrolet Ford GMC Isuzu Mazda Mercury Pontiac 1997 Chevrolet Ford Mazda Mercury 1996 Chevrolet Ford Mazda Mercury 1995 Chevrolet Ford Mazda Mercury Oldsmobile Pontiac 1994 Chevrolet Ford Mazda Mercury Oldsmobile Pontiac 1993 Chevrolet Ford Mercedes-Benz Mercury Oldsmobile Pontiac 1992 Chevrolet Dodge Eagle Ford Mercedes-Benz Mercury Oldsmobile Pontiac 1991 Audi Chevrolet Dodge Eagle Ford Mercedes-Benz Mercury Oldsmobile Peugeot Pontiac 1990 Audi Dodge Eagle Ford Mercedes-Benz Mercury Peugeot Volvo 1989 Eagle Ford Mercedes-Benz Mercury Merkur Peugeot Volvo 1988 Buick Eagle Ford Jaguar Mercedes-Benz Mercury Merkur Oldsmobile Peugeot Pontiac Volvo 1987 Buick Ford Jaguar Mercedes-Benz Mercury Merkur Oldsmobile Peugeot Pontiac Volvo 1986 Buick Ford Jaguar Mercedes-Benz Mercury Merkur Oldsmobile Pontiac Renault Volvo 1985 Buick Ford Jaguar Mercedes-Benz Mercury Merkur Oldsmobile Pontiac Renault Volvo 1984 Ford Jaguar Mercedes-Benz Mercury Renault Volvo 1983 DeLorean Ford Jaguar Mercury Volvo 1982 DeLorean Ford Jaguar Mercury Volvo 1981 DeLorean Ford Jaguar Mercury Volvo 1980 Ford Jaguar Mercury Peugeot Volvo 1979 Ford Jaguar Mercury Peugeot Volvo 1978 Ford Mercury Peugeot Volvo 1977 Ford Jaguar Mercury Peugeot Volvo 1976 Chevrolet Ford Mercury Volvo 1975 Chevrolet Ford Mercury 1974 Ford Non Automotive Commercial & Industrial Tractors & Lift Trucks KEM EQUIPMENT Lawn & Garden Golf Cart TEXTRON (E-Z-GO) Golf Carts Textron (E-Z-GO) Lawn Mowers CRAFTSMAN (SEARS) HUSTLER INGERSOLL INTERNATIONAL JOHN DEERE ONAN ROPER Outdoor Power Equipment BEAR CAT CRAFTSMAN (SEARS) DITCH WITCH GRAVELY SMITHCO TORO Marine Inboard Berkeley CRUSADER Crusader CRUSADER Crusader Flagship Hardin Marine INDMAR KODIAK MARINE POWER MERCRUISER OMC Volvo Penta VOLVO-PENTA Recreation Golf Carts TEXTRON (E-Z-GO)