Enhance your vehicle's ignition system with the Autolite Racing Plug. Designed for racing enthusiasts, this spark plug features a 14 mm thread and a 0.750 inch reach with a gasket seat. It's non-resistor type, ensuring a reliable performance in demanding racing conditions. Compact yet powerful, it measures at 3.5 inches in length, 1.05 inches in width, and 1.0 inch in height, fitting seamlessly into your engine's ignition setup.