Description
Super Conductor Wires
8.5mm helically-wound spark plug wires with just 40-50 ohms/ft resistance and RFI suppression equal to a 1,500-ohm wire.
8.5mmWire diameter
40-50 ohm/ftResistance
1,500 ohmRFI suppression eq.
2-in-1Socket & HEI cap
Overview
The MSD 31159 Super Conductor is a universal 4-cylinder spark plug wire set built from 8.5mm helically-wound wire. A copper-alloy conductor packs over 40 ft of tight winding into every foot of wire, giving a low 40-50 ohms/ft resistance so more spark energy reaches the plugs while suppressing radio-frequency interference.
Made for custom and performance builds: the universal design ships extra-long so you cut each lead to length, and the kit carries terminals for both early socket-style and late HEI (spark-plug-top) distributor caps.
Specifications
Wire diameter8.5mm Super Conductor (helically wound)
Resistance40-50 ohms per foot
ConductorCopper-alloy, 40+ ft wound per foot of wire
RFI suppressionEqual to a 1,500-ohm wire
Spark plug bootsMulti-angle boots
Distributor terminalsFits early socket-style and late HEI (spark-plug-top) caps
JacketSilicone / synthetic over glass braid and dielectric insulator
ColorRed
ConfigurationUniversal 4-cylinder, cut-to-length
Part numberMSD 31159
What's in the box
- 8.5mm wire for a 4-cylinder engine with spark-plug boot/terminal on one end
- distributor cap boots & terminals (socket + HEI)
- Mini-Stripper-Crimper tool
Fitment
ApplicationUniversal 4-cylinder (HEI/socket cap)
InstallUniversal cut-to-length design - trim each lead to size and crimp the distributor terminal with the included tool.
Universal set; confirm your distributor cap style (socket vs HEI) and the wire lengths you need before installing.
Best suited for
Custom 4-cyl builds
Performance ignition
Universal replacement
Wires ship uncut - some assembly and crimping is required.
Fast dispatchShips in 24–48h
Genuine productAuthentic MSD
Easy returns10-day returns, unused items
Fitment helpWe'll confirm before you buy
Returns
Return within 7 days of purchase, provided the item is unused and in its original condition and packaging. Taxes are non-refundable.
We can’t take back parts that have been fitted or modified, unsealed electrical components, ECUs and sensors, opened gaskets, seals and o-rings, or clearance items. Parts we order in specifically for you can’t be returned for change of mind — we’ll tell you before you order if yours is a special order.
If a part is faulty, damaged in transit or isn’t what you ordered, we’ll put it right and cover the return shipping.
Please contact us before returning anything. Full terms are in our Refund policy.
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