The Accel Spark Plug Wire Set (Black) is designed to deliver superior spark performance for street-driven applications. With its spiral-core wires and RFI suppression, this wire set ensures efficient, high-spark output, making it a key upgrade over stock wires for improved ignition performance. Construction and Appearance. This wire set is constructed from premium-grade materials, featuring an 8mm silicone jacket and high-dielectric-strength Epdm inner insulation. It also includes tightly woven fiberglass braids for added durability, with a high-gloss black finish for a sleek appearance. Stainless steel and zinc-plated terminals ensure reliable connections. Installation. Installation is quick and easy with no drilling or modifications required. The set is designed for straightforward replacement in compatible vehicles. Application.