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From Top Fuel dragsters to street driven cars the 8.5mm Super Conductor Spark plug wire delivers performance!


  1. Snap-Lock Plug Grip
  2. Separate Crimp Tabs for the Conductor
  3. Large Crimp Tabs grip the sleeve
  4. 8.5mm jacket protects against high heat and resists tears
  5. Extra heavy glass braid
  6. High dielectric insulator
  7. Ferro-magnetic impregnated center core
  8. Helically wound copper alloy conductor

Dual Crimp Terminals

The MSD’s 8.5mm spark plug terminals feature “Dual Crimp” terminals. As the name implies, the terminals feature two crimps; one for the sleeve of the wire and another separate crimp to grasp the conductor. By having separate crimps, the conductor doesn’t need to be bent 180° and get squeezed between the terminal and sleeve. This individual conductor crimp produces a more secure crimp and there is less chance of spark arcing to the engine block or exhaust manifold through the boot!


  • Copper alloy conductor has a resistance value of less than 50 ohms per foot for superior spark
  • Ferro-magnetic impregnated core creates an effective EMI choke
  • Forty feet of conductor is wound into a single foot of wire for high EMI suppression
  • Conductor core features Dupont Kevlar material for increased tensile strength
  • Durable outer sleeve is a proprietary compound for resistance to high heat or abrasion

Super Conductor Spark Plug wires are available in either red or black.

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MSD Spark Plug Wires

With its extremely low-resistance combined with the ability to suppress Electro Magnetic Interference the MSD 8.5mm Super Conductor Spark Plug wire is the ultimate performance wire!