Mr. Gasket Universal Spark Plug Wire Dividers are fitted with adjustable tabs that attach to the base of the valve covers using the existing valve cover bolts for a quick, easy installation. Manufactured from brushed aluminum in a universal two-piece design compatible with virtually all valve covers, these 14.75-inch separator sets are a perfect fit for 7mm and 8mm plug wires, minimize crossfire on high-energy ignition systems, and keep your wires neatly routed away from hot headers or exhaust manifolds for a clean, custom look.