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MSD®
31389 8.5mm Super Conductor Series Spark Plug Wire, Set of 8

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$143.06
$178.95Save: $35.89(20%)
OR
Manufacturer #31389
Vehicle Info Required to Guarantee FitAdd Vehicle
Qty:
1
489EA277-E7FF-4435-978F-6756E2AE109D@1x
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Highlights

Brand:
Design:
Assembled
Quantity Sold:
Set of 8
Recommended Use:
OE Replacement
Product Fit:
Direct Fit
Wire Color:
Red wire finish
Wire Material:
Copper core wire material
Diameter:
8.5 mm Diameter
Distributor Boot Color:
Gray distributor boot finish
Distributor Boot Material:
Silicone distributor boot material
Distributor Terminal End Type:
Female/Socket distributor terminal end type
RFI Suppression:
With RFI suppression
Spark Plug Boot Color:
Gray spark plug boot finish
Spark Plug Boot End Type:
Multi-Angle spark plug boot end type
Spark Plug Boot Material:
Silicone spark plug boot material
Includes:
Ignition coil wire
Warranty:
1-year MSD limited warranty
Prop 65 Warning:

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Additional Promotions:
Holley Brands IRS Tax Sale
Specialty Part:
Performance Part by JCW
Series:
8.5mm Super Conductor Series

Vehicle Fitment Information

Vehicle Name
Submodel
Engine
Fitment Information
1965-1966 Ford Custom
Base
8 Cyl 5.8L
For Use On Ford Engines, With Socket Style Distributor Caps
1965-1966 Ford Custom 500
Base
8 Cyl 5.8L
For Use On Ford Engines, With Socket Style Distributor Caps
1965-1966 Ford Galaxie
Base
8 Cyl 5.8L
For Use On Ford Engines, With Socket Style Distributor Caps
1965-1966 Ford Galaxie 500
Base
8 Cyl 5.8L
For Use On Ford Engines, With Socket Style Distributor Caps
1965-1966 Ford Galaxie 500
XL
8 Cyl 7.0L
For Use On Ford Engines, With Socket Style Distributor Caps
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Product Information

MSD SPARK PLUG 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 inch length of Super Conductor Wire there is only 40 - 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 in spark energy so more reaches the spark plug. The conductor is wound extremely tight around a special center core. So tight in fact, that there is over 40 feet 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". This choke, or suppression capability, keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle. The outer sleeve that surrounds the conductor assembly is just as impressive. A proprietary blend of silicone and synthetic material produce a sleeve that is highly resistant to high heat as well as abrasion and tears. 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. 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.

  • Custom fit for make and model listed.
  • Wires are precut to exact specifications
  • Bolt-on performance
  • Cutting-edge technology
  • Has undergone rigorous testing
  • Offered from a wide range of products tailored to specific needs
  • Built to last

From ignitions to distributors, starters to coils, from spark plugs to plug wires, there’s an MSD product to help you get the most out of your engine.

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Warranty Policy
Right parts, guaranteed. If you find any defects, let us know within 60 days and we’ll take care of it. Check out our Warranty Policy for more details.
Shipping Policy
We ship fast so you can get on the road that much faster. Check out our Shipping Policy for more details.
Easy Return Policy
We’re only happy if you’re happy. If you’re not entirely satisfied with your order, you may be entitled to a refund. Check out our Return Policy for more details.

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