ACCEL 7961Y Yellow 300+ Thundersport Ferro-Spiral Spark Plug Wire Set High-gloss 8mm double silicone wire is rated at over 550 degrees Fahrenheit and 60KV with a fiberglass braid Spark plug boot is precision-molded to fit your vehicle Provides maximum energy to spark plug, sport compact vehicle coverage Heavy-gauge copper-nickel alloy conductor Ferrite Electromagnetic Interference/Radio Frequency Interference suppression element and 150 Ohms per foot resistance