Double Platinum spark plugs feature platinum-to-platinum technology and encompass platinum tips therefore virtually eliminating gap erosion, reduce misfires, and provides 100K mile durability. This spark plug also has a high nickel chrome alloy side electrode, a necked-down centre electrode and utilises full copper core centre electrode and makes sure you are receiving a superior spark plug for your vehicle. This spark plug is suitable for DIS engines and is guaranteed for 5 years.