<ul> <li>Multi-Ground Electrodes Improve Ignition Capabilities and are Less Sensitive to Increased Voltage Requirements Due to Gap Growth.</li> <li>Designed to Specific Manufacturer Ignition Requirements, NGKs Multi-Ground Plugs Maintain All the Features of Their Standard Plugs, Including:</li> <li>Corrugated Ribs to Prevent Flashover</li> <li>Pure Alumina Silicate Ceramic Insulator, Providing Superior Strength and Better Heat Transfer</li> <li>Copper Core to Aid in Heat Removal</li> </ul>

Standard spark plugs are chosen by more automotive&#44; motorcycle and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts&#44; peak performance and long life.<BR><UL><LI>Triple gasket sealing process eliminates gas leakage past the shell</LI><BR><LI>99% Highly pure alumina silicate insulator</LI><BR><LI>Solid copper core</LI><BR><LI>Corrugated ribs to prevent flash over</LI><BR><LI>Cold rolled threads to prevent damage to cylinder head</LI><BR><LI>Trivalent plating - silver chromate and zinc for corrosion resistance</LI><BR><LI><B>Sold in standard packs only</B></LI></UL>