NGK BR6FS Spark Plug The NGK BR6FS Spark Plug is a standard NGK plug. NGK Standard plugs are an OE cornerstone that have provided decades of reliable performance. The solid copper core offers superior heat dissipation, conductivity, and broad heat range. This plug is treated with corrosion-resistant plating to ensure ease of installation and removal. NGK Standard spark plugs provide reliable performance and are engineered specifically for OE applications. Part Number BR6FS Stock Number 4323 Resi