Motorcraft SP-432 Spark Plug Same part that was installed when the vehicle rolled-off the assembly line Designed to deliver quick starts, enhanced fuel economy and smooth acceleration with 100,000 mile service interval Provides a center-wire platinum firing tip for reduced gap erosion, fewer misfires, enhanced performance and increased durability Copper-glass seal bonds insulator, terminal post center electrode together; assures full required voltage at spark gap; gas-tight seal