Premium Duralast gold™ wire sets are designed to exactly replace the original equipment set. They feature conductors that match original equipment in material and resistance characteristics. These wire sets are manufactured using only the best in high temp jacketing, stainless steel spark plug terminals, and high temperature, heat resistant OE boots. Duralast gold™ wire sets offer easy installation - many sets, where applicable, are pre-assembled to include OE hard loom with mounting hardware or wire clips and feature cylinder number identification flags.