Genuine NGK 3981 Iridium Spark Plugs Pack of 4 Suzuki PE 400 1981     NGK BR9EIX Spark Plugs - pack of 4. NGK - the world's No.1 spark plug - brings you the Iridium IX designed specifically with the performance enthusiast in mind. Iridium IX offers extreme ignitability, improved throttle response and superior anti fouling. FEATURES & BENEFITS: Fine 0.6mm laser welded Iridium tip ensures high durability and a consistently stable spark. Iridium alloy has an extremely high melting point and is extremely durable to heat, corrosion and electrical wear. Trivalent Metal Plating provide superior anti-corrosion and anti-seizing properties. Tapered ground electrode to minimize "Quenching Effect", give a superior fuel flow and lower voltage requirements. Outstanding acceleration, high fuel efficiency and extreme durability. Ultimate design, technology and performance. Lower Fuel Consumption Longer life Smoother Engine Running Improved Ignition efficiency giving enhanced power and acceleration.               Check out our shop for more NGK goodies! We also stock this spark plug singularly.