NGK Spark Plug,5/8" Hex Sz,0.393" Thread

Spark Plug, Application Marine, Powersports, Hex Size 5/8 in, Thread Size 0.393 in, Thread Reach 0.75 in, Ground Electrode Quantity 1, Ground Electrode Tip Design Standard, Gap Size 0.031 in, Resistor Plug Yes, Hex Size - Metric 15.88 mm, Thread Reach - Metric 19.05 mm, Insulator Material Ceramic, Manufacturer Heat Range 9, Seat Type Flat, Center Electrode Diameter 0.098 in, Ground Electrode Material Nickel Core, Center Electrode Material Nickel