NGK V-Power plugs feature a unique v-cut in the center electrode that directs the spark to the edge of the electrode, helping the spark develop more rapidly, increasing ignitability and reducing quenching. 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: UR4 Specifications Warranty 1 Year Torque Specs Cast Iron: 10.8-18 lb. ft. Aluminum: 7.2-14.5 lb. ft. Brand NGK Heat Range 4 Longevity 30k Miles Resistor Yes Shell Thread Size 14mm Thread Pitch 1.25mm Seat Type Tapered Resistor Value 5K Ohm Reach 11.6mm (.460") Hex Size 5/8" (16mm) Terminal Type Solid Overall Height ISO Gap .039" (1.0mm) Center Electrode Material Nickel Type V-Cut Size 2.5mm Projection Projected Ground Electrode Material Nickel Type Standard Quantity 1 Fitment Automotive 1996 Ford 1995 Ford 1994 Ford 1993 Cadillac Chevrolet Ford 1992 Cadillac Chevrolet Ford Oldsmobile Pontiac 1991 Buick Cadillac Chevrolet Ford Oldsmobile Pontiac 1990 Chevrolet Ford Pontiac 1989 Chevrolet Ford Mercury Pontiac 1988 Chevrolet Ford Mercury Pontiac 1987 Buick Chevrolet Dodge Ford GMC Mercury Pontiac 1986 Buick Chevrolet Dodge Ford GMC Mercury Pontiac 1985 Buick Chevrolet Dodge Ford GMC Mercury Pontiac 1984 Buick Chevrolet Dodge Ford GMC Mercury Pontiac 1983 Buick Chevrolet Chrysler Dodge Ford GMC Mercury Plymouth Pontiac 1982 Buick Chevrolet Chrysler Dodge Ford GMC Oldsmobile Plymouth Pontiac 1981 Buick Chevrolet Chrysler Dodge Ford GMC Oldsmobile Plymouth Pontiac 1980 Buick Chevrolet Chrysler Dodge Ford GMC Oldsmobile Plymouth Pontiac 1979 Buick Chevrolet Chrysler Dodge Ford GMC Oldsmobile Plymouth Pontiac 1978 Buick Checker Chevrolet Chrysler Dodge Ford GMC Mercury Oldsmobile Plymouth Pontiac 1977 Buick Checker Chevrolet Dodge Ford GMC Mercury Oldsmobile Plymouth Pontiac 1976 Checker Chevrolet Dodge Ford GMC Lincoln Mercury Oldsmobile Plymouth Pontiac 1975 Chevrolet Dodge Ford GMC Lincoln Mercury Plymouth 1974 Buick Checker Dodge Ford Lincoln Mercury Oldsmobile Plymouth Pontiac 1973 Buick Checker Ford Lincoln Mercury Oldsmobile Pontiac 1972 Buick Checker Chevrolet Ford Mercury Pontiac 1971 Buick Checker Chevrolet Ford GMC Jeep Mercury Oldsmobile Pontiac 1970 Buick Checker Chevrolet Ford GMC Jeep Mercury Oldsmobile Pontiac 1969 Buick Ford Jeep Mercury 1968 Buick 1967 Buick Non Automotive Commercial & Industrial Commercial and Industrial Engines Chrysler Generators GEN-PRO GENERAC KOHLER Power Equipment Engines KOHLER Tractors & Lift Trucks BOBCAT CUSHMAN FORD HYSTER KEM EQUIPMENT MELROE SHOP MULE WHITE MOBILIFT YALE Lawn & Garden Lawn Mowers ARIENS BOLENS FERRIS FMC FORD INGERSOLL INTERNATIONAL KUBOTA POULAN PRO POWER KING SIMPLICITY SPEEDEX WHEEL HORSE Outdoor Power Equipment ALLIS-CHALMERS CHIP-IT CUSHMAN FORD GIANT VAC JOHN DEERE MERRY MAC MIGHTY MAC SIMPLICITY TORO YAZOO Marine Inboard KODIAK OMC Volvo Penta VOLVO-PENTA