Ford Performance designed this M-12259-C460 Blue 460 Spark Plug Wire Set for the 460 7.0/7.5L engine. This 9mm wire-wound custom ignition wire set features low resistance for minimum spark loss. Silicone insulation and boots withstand high temperatures and voltage loss for minimum cross-fire. They are also highly resistant to fuels, oils and solvents. “Ford Racing” and cylinder number identification appears on each wire.Ford Performance M-12259-C460 Blue 460 Plug Wire Set Features: Fits 460 7.0/7.5L Engines Includes coil wire for socket-type coil Long-life, tough stainless steel terminals for “post” type distributor caps Intended as a replacement part for use only in the application(s) identified in the product description. Installation of this part in a vehicle for which it is not intended may violate U.S. and Canadian laws and regulations related to motor vehicle emissions.