NGK Spark Plug;5/8" Hex Sz;0.551" Thread

Spark Plug; Application Automotive; Hex Size 5/8 in; Thread Size 0.551 in; Thread Reach 0.75 in; Ground Electrode Quantity 1; Ground Electrode Tip Design Standard; Gap Size 0.016 in; Resistor Plug Yes; Hex Size - Metric 15.88 mm; Thread Reach - Metric 19.05 mm; Insulator Material Ceramic; Manufacturer Heat Range 7; Seat Type Flat; Center Electrode Diameter 0.023 in; Ground Electrode Material Platinum Core; Center Electrode Material Iridium