Motorcraft Original Equipment spark plugs are designed, engineered and recommended by Ford Motor Company. Product Features:Same part installed when the engine rolled off the assembly line30,000-mile service intervalCopper core electrode and nickel chromium alloy side electrode for excellent heat dissipation and durability.Resistor reduces radio frequency interference (RFI) and electrode erosionCopper-glass seal bonds insulator and terminal post center electrode together to ensure full required voltage at spark gap and a gas-tight seal
