The NGK BR9HS-10 "NICKEL" Standard Plug Spark Plugs 4551 are a set of 8 high-quality spark plugs designed for use in car and truck ignition systems. Made with durable nickel material and crafted in Japan, these spark plugs provide reliable performance and optimal spark for improved engine efficiency. With the manufacturer part number 4551 BR9HS10 and a California Prop 65 Warning, these NGK spark plugs are a dependable choice for maintaining your vehicle's ignition system.