Install in place of small factory wires. REALLY improves spark charcteristics. Expect a smoother idle, MORE horsepower, and even a little better gas mileage! Massives pure power silicone wires are not only good looking but have far lower resistance than other wires. These wires have an extra thick boots for excellent life and to keep the elements from corroding the contacts. Each wire has its own wire number marker and an included wire loom seperator to keep the wires tidy and looking good. Dielectric grease is included to ease both installation and future removal. These wires are covered by Massive’s unbeatable limited LIFETIME WARRANTY. Quality made in the USA!!! Very straight forward installation. If you need assistance, let us know and we’ll walk you through it! Should take less than 20 minutes for a novice car guy (or girl). Wires are available in blue, red, yellow and black. Please specify stock factory coil boots or MSD coil clip on style boots.