This is an Evolution NGK5812 CM6 Spark Plug. The NGK standard series spark plug has a hotter spark, which means better combustion, and that improves performance and produces less harmful emissions.
Shorty Spark Plug: No
Manufacturer Heat Range: 6
Electrode Core Material: Copper
Electrode Tip Material: Nickel alloy
Insulator Type: Non-projected
Spark Plug Thread Size: 10mm (0.394in)
Spark Plug Reach: 8.6mm (0.339in)
Spark Plug Seat Style: Gasket
Wrench Diameter: 9/16 in.
Ground Strap Quantity: One
NGK Part Number: CM-6
Quantity: Sold individually