ACCEL 5041Y SuperStock 8mm 5000 Series Yellow Custom Spiral Core Spark Plug Wire Set Double silicone construction around a fiberglass braid Spiral wound stainless steel alloy conductor with a fiberglass Kevlar core Withstands temperatures up to 550 degrees Fahrenheit Just 500 ohms per foot of resistance for crisper, more efficient ignition Also available black, red, and blue, with either straight or 90 degree boots