9MM SPARK PLUG WIRE SETS - "FORD RACING" Wire-wound custom ignition wire sets feature low resistance for minimum spark loss. Silicone insulation and boots withstand high temperatures and voltage loss for minimum cross-fire and are highly resistant to fuels, oils and solvents. Long-life, tough stainless steel terminals for post type distributor caps. Includes coil wire for socket-type coil and Ford Racing identification. Cylinder number appears on each wire.