MSD 31523 8.5mm Super Conductor Spark Plug Wire Set (Black, Hemi Tubes)

★★★★★ 4.3 59 reviews

$90.00
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$90.00
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Free shipping Free 30-day returns

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Management number 212531750 Release Date 2026/04/06 List Price $36.00 Model Number 212531750
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The MSD 8.5 mm Super Conductor wire is the performance wire. Engineered from the inside out, the 8.5 offers everything you have ever wanted in a wire; incredibly low resistance without electronic interference. In a single 12 In. length of Super Conductor wire there is only 40 to 50 ohms of resistance. That is the lowest resistance of any helically wound wire. To accomplish this, we use a copper alloy conductor due to it's great voltage carrying capabilities. The low resistance results in less loss of spark energy so more reaches the spark plug. The conductor is wound extremely tight around a special center core. So tight, that there is over 40 Ft. of conductor wrapped into a single foot of plug wire. This winding procedure, combined with a Ferro-magnetic impregnated center core, produces an extremely effective electro magnetic interference (EMI) choke.

  • 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
  • Stainless steel terminals feature dual crimp tabs to grip wire conductor and outer jacket separately
Brand MSD
Model JEGS
Exterior Per Item Description
Item Weight 2.32 pounds
Manufacturer MSD Ignition
OEM Part Number 31523
Item model number 31523
Manufacturer Part Number 31523
Is Discontinued By Manufacturer No

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