Spark Plugs - 1633(LMAR9D-J)

Multi-Ground Electrodes Improve Ignition Capabilities and are Less Sensitive to Increased Voltage Requirements Due to Gap Growth. Designed to Specific Manufacturer Ignition Requirements, NGK's 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 Leakage Sold individually Features Special Motorcycle Plug Multi-Ground Corrugated Ribs Copper Core Shell Thread Size: 10mm Thread Pitch: 1.0mm Seat Type: Gasket Resistor: Yes Resistor Value: 5K Ohm Reach: 26.5mm (1.04") Hex Size: 9/16" (14mm) Terminal Type: Solid Overall Height: ISO Gap: 031" (0.8mm) Center Electrode Material: Nickel Type: Standard Size: 2.5mm Projection: Projected Ground Electrode Material: Nickel Type: Multi-Ground Quantity: 2 Specifications Torque Specs: Cast Iron: 7.2-10.8 lb. ft. Aluminum: 7.2-8.7 lb. ft. Brand: NGK Heat Range: 9 Longevity: 30k