ACCEL SuperStock spark plug wires are uniquely engineered to upgrade your old OE wires. Ideal for street-driven applications; the 8mm wires have black 450-degree-Fahrenheit-rated silicone jackets extruded over sturdy; tightly woven fiberglass braids. These spiral-core wires feature RFI suppression; special high-dielectric-strength EPDM inner insulation that exceeds SAE specifications; and zinc-plated terminals; come in a set of 8; and feature straight boots in matching black.