Removable Terminal Nut Corrugated Ribs Triple-Gasket Sealing Process Copper Core
NGK's Standard Plugs are Constructed for Longer Life and Optimum Performance.
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