NGK Standard Spark Plug - LMAR9E-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:Features:- 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 leakageSpecifications:Shell: - Thread Diameter: 10mm- Thread Pitch: 1.0mm- Seat Type: Gasket- Reach: 26.5mm (1.04´´)- Hex Size: 9/16´´ (14mm)- Terminal Type: Threaded Stud- Overall Height: ISO- Gap.: 028´´ (0.7mm)- Center Electrode- Material: Nickel- Type: Standard- Size: 2.5mm- Projection: Projected- Ground Electrode- Type: Multi-Ground- Resistor: Yes- Resistor Value: 5k Ohm- Heat Range: 9- Torque SpecsCast Iron: 7.2-10.8 lb. ft. Aluminum: 7.2-8.7 lb. ft.- Longevity: 50k Miles