The NGK BM6F BLYB Standard Nickel spark plug is a replacement plug. It has M14-1.25 threads, a 0.375 in. reach, a 5/8 in. (16 mm) hex and a heat range of 6. Its nickel alloy center electrode and copper core follow the original equipment design for engines that came with nickel plugs.

NGK BM6F BLYB Standard Nickel Spark Plug Features:

• M14-1.25 metric thread with 0.375 in. reach
• 5/8 in. (16 mm) hex
• Tapered seat
• Heat range 6
• 0.028 in. factory pre-gap
• Nickel center electrode tip with nickel ground electrode tip
• Non-resistor design
• Removable nut terminal
• 1.450 in. insulator height
• Nickel alloy center electrode built to the original equipment design
• Copper core center electrode draws heat away from the firing end
• Alumina silicate ceramic insulator for high dielectric strength
• Trivalent metal plating resists corrosion and thread seizing
• Rolled threads help prevent cross-threading in the cylinder head
• Intended for engines that originally used nickel alloy plugs, not as a replacement for factory precious metal plugs
• Sold individually