The NGK Standard spark plug is built of long-lasting materials and designed to deliver dependable performance in various automotive and non-automotive applications. The spark plug features a 5-Rib insulator design to avoid flashover and is corrosion-resistant plated for ease of installation and removal. Cold-rolled threads protect the cylinder head. Key features: Cold-rolled threads - avoids cylinder head damage. The triple gasket sealing method effectively reduces gas leaking through the shell. Solid copper core - offers improved heat dissipation, conductivity, and a more comprehensive temperature range. Trivalent plating is a three-step method that uses silver chromate and zinc to achieve optimal corrosion resistance. Specifications: Center Electrode Core Material: Copper Core Center Electrode Tip Material: Nickel Electrode Core Material: Nickel Electrode Tip Material: Nickel Gap Size: 0.028 inches Ground Configuration: Standard Ground Electrode Core Material: Nickel Core Ground Electrode Quantity: 1 Ground Electrode Tip Design: Standard Ground Strap Quantity: 1 Hex Size: 13/16 Manufacturer Heat Range: 4 Reach: 11.2 mm Resistor: No Seat Type: Gasket Shorty Spark Plug: No Thread Diameter: 14 mm Tip Configuration: Loose Type: Standard Wrench Diameter: 13/16 in Brand: Autowares Manufacturer s Part Number: 86-3112