MSD Street-Fire Wire Set 8 Cyl 90°, Sock/ HEI, Univ - 5553The terminals are covered in black boots that protect the conductor from engine heat to ensure spark delivery. Part Number: 5553 The Street Fire Spark Plug Wires feature a low resistance conductor that's wrapped in a sleek and durable black sleeve. Features and Benefits Kit includes 2 56", 2 50", 2 42", and 3 32" wires