The NGK Standard Spark Plug is made of a long-lasting, corrosion- and abrasion-resistant material. The spark plug insulators are made of 99 percent pure alumina silicate, which allows for longer insulator noses and less fouling. This spark plug has a three-gasket sealing process that prevents fuel leakage. It also has a solid copper core for superior heat dissipation and conductivity. This spark plug has a resistor made of glass and carbon that is fired to ensure outstanding performance and durability. It has corrugated ribs to prevent flashover and cold-rolled threads from preventing cylinder head damage. Features: Trivalent metal plating has excellent corrosion and anti-seizing properties. Corrugated ribs keep flashover at bay. This pure alumina silicate ceramic insulator provides superior strength and heat transfer. The copper core aids heat removal. Triple seals keep leaks at bay. Standard plugs are designed to last longer and perform better. Specification: Brand: Autowares SKU: 86-6512 UPC: 087295065129 Weight: 0.15 LBS