MSD 31869 Spark Plug Wire Set

It has a resistance less than 50 ohms/ft. for superior spark. Extra heavy glass braid and strong dielectric insulator. Helically wound copper alloy conductor. 40 feet of conductor wound in one foot of wire. 8.5mm jacket protects from high heat or abrasion. Silicone and synthetic heat resistant boot. Ferro-magnetic impregnated core creates EMI choke. Core made with Dupont Kevlar to add tensile strength.