NGK BR6S Spark PlugThe NGK BR6S 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:BR6SStock Number: 3522Resistance (Ohm): 5000Hex Size: 13/16″Gap: .028″Ground configuration: StandardGround electrode core material: NickelCenter electrode core material: CopperCenter electrode tip material: NickelFits Chevy 53-70, GMC 67-70, Chrysler76-91Check your engine and maintenance manual for the correct spark plug and only use as recommended by your engine’s original equipment manufacturer. Using the wrong plug can reducing optimum performance, reduce fuel economy or cause damage to your engine.