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


Warning: Cancer and Reproductive Harm – www.P65Warnings.ca.gov

Manufacturer's Part Number	5509
CARB Approved	Yes