Enhance your engine's performance with the Autolite Racing Plug. Engineered for superior ignition, this spark plug features a 14 mm thread and a 0.460-inch reach. With a tapered seat and non-resistor design, it's perfect for racing applications. Dimensions include a length of 3.45 inches, width of 1.05 inches, and height of 1.0 inch. Ideal for ignition systems requiring precision and reliability.