5540 MSD Street-Fire Wire Set Ford 351W, 400, 460, '77-On HEI

Wire Set,SF,Ford 351W,400,460,'77-On HEI Street-Fire Wire Set Ford 351W, 400, 460, '77-On HEI The terminals are covered in black boots that protect the conductor from engine heat to ensure spark delivery. The Street Fire Spark Plug Wires feature a low resistance conductor that's wrapped in a sleek and durable black sleeve. Silicone boots protect against high exhaust temps