The Autolite Racing Plug, model AUTAR2593, is engineered for high-performance racing engines. Featuring a 14 mm thread and a 0.750 in reach, this non-resistor spark plug is built with precision. The gasket seat ensures a secure fit, and its compact size with a length of 3.5 inches, width of 1.1 inches, and height of 1.05 inches makes it ideal for the tight spaces in racing applications. Elevate your engine's performance with this premium spark plug from Autolite.