MSD 31239 Super Conductor Spark Plug Wire Set 8 Cyl 90°: Plug, Socket/HEI Cap
Description
⚡ Ignite your engine’s potential with precision and power!
- HEAT ABRASION SHIELD - Proprietary outer sleeve resists extreme heat and wear, built to last in demanding engine environments.
- ADVANCED EMI SUPPRESSION - Ferro-magnetic impregnated core and 40:1 conductor winding drastically reduce electromagnetic interference.
- KEVLAR REINFORCED DURABILITY - Dupont Kevlar core boosts tensile strength, preventing wire damage under stress.
- SECURE STAINLESS STEEL TERMINALS - Dual crimp tabs grip conductor and jacket separately for reliable, vibration-proof connections.
- ULTRA LOW RESISTANCE FOR MAXIMUM SPARK - Copper alloy conductor ensures less than 50 ohms per foot for peak ignition performance.
The MSD 31239 Super Conductor Spark Plug Wire Set features a copper alloy conductor with ultra-low resistance under 50 ohms per foot, enhanced EMI suppression through a ferro-magnetic impregnated core and 40:1 conductor winding, and a Kevlar-reinforced core for superior tensile strength. Its proprietary heat- and abrasion-resistant outer sleeve and dual-crimp stainless steel terminals ensure durability and secure connections, making it the ultimate upgrade for 8-cylinder ignition systems.
Specifications
| Item Package Dimensions L x W x H | 11.14 x 10.55 x 2.91 inches |
| Package Weight | 1.55 Kilograms |
| Item Weight | 3.36 Pounds |
| Brand Name | MSD |
| Warranty Description | Warranty |
| Model Name | MSD 31239 8.5mm Super Conductor Spark Plug Wire Set |
| Color | Red |
| Material | Plastic |
| Suggested Users | unisex-adult |
| Manufacturer | MSD Ignition |
| Part Number | MSD-31239 |
| Included Components | MSD 31239 8.5mm Super Conductor Spark Plug Wire Set |
| Size | 8.5 Millimeter |
Reviews
T**N
MSD Always Great Product. I have always used MSD products on our race cars with 0 failures..
MSD Always Great Product. I have always used MSD products on our race cars with 0 failures. Will continue to use.. Highly recommend product
R**H
Great item
Great product, used these for years
T**N
Good quality / slow to get
I a very happy with MSD, ALL OF THEIR PRODUCTS ARE GREAT, THE PRICE IS A LITTLE MUCH FOR ME BUT YOU HAVE TO PAY FOR GOOD QUALITY. THE TIME IT TOOK TO GET HERE WAS NOT VERY GOOD, IT TOOK 5 DAYS TO GET, I GOT MY PLUGS IN A DAY AND A HALF.
D**N
like it says it does
I did not receive the straight plug boots that are pictured. I received the angled boots. I had wanted what was pictures. Wires are very long, so they should fit anything. Still haven't installed them. The video online says to use dielectric grease to aid placing the dizzy end boot on. After trying without grease, I now have to wait for grease to arrive. The kit does not have everything you need to do the job...like it says it does. Bleh.
C**D
Fantastic Wires!
These seem to be very good quality wires. The set came with everything I needed to complete the job! Engine is a 355 using an msd distributor. Truck is a 72 Chevrolet 4x4. Wires route behind the heads and under the exhaust manifolds. They allow plenty of length to put the wires where they need to be for a factory finish.
C**S
Product was used
Ordered these so I could have my plug wires cut to a custom length and add the ends myself. When I received the product the wires had already been crimped and used with numbers written on wires in sharpie plus it only came with 7 wires.. no coil wire or 8th wire for plugs. 100 dollars down the drain.
D**Z
Just as advertised
Just as advertised
J**A
but fit perfect, and look wonderful
these are a little bit of work,but fit perfect,and look wonderful!
Common Questions
Trustpilot
5 days ago
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