Built to match the Original Equipment in length and fit, ACDelco Professional Ignition Wire Sets also offer a performance advantage over many aftermarket products. Product Features:Designed to match Original Equipment wire sets in critical areas such as cable length and diameter, terminal design and insulator position.Have broad coverage available for most vehicles on the road today from 1980 to present.Provide a high degree of Radio Frequency Interference (RFI) suppression.Are designed to offer fit, form and function for optimum performance.Kevlar-reinforced fiberglass core in select sets for increased strength.Core sheathed in radio-static-absorbent material for increased RFI suppression.Wire-wound, stainless-steel alloy conductor for maximum spark delivery and RFI suppression on most applications.A layer of conductive heat-resistant latex for added durability.Insulating rubber-based compound inner jacket helps minimize voltage drop and enhance durability.Thick silicone outer jacket for excellent heat resistance.