The Beru Ultra copper core spark plug is OEM Quality and is guaranteed to meet or exceed the vehicle manufacturers specifications for performance and durability. Product Features:Optimal combustion: saves fuel and protects the catalytic converter.Reliable ignition under all operating conditions.Long life, high dependability.Two-component earth and center electrode with nickel-jacketed copper core.Replacement versions same as OEM. Beru offers a wide range of quality spark plugs for a large number of different engines and applications, these spark plugs are also often used in OEM. This guarantees a high quality level and innovative technology.