Super Conductor 8.5 mm Spark Plug Wire, 25 ft. Bulk Roll [Red]

Name: Super Conductor 8.5 mm Spark Plug Wire, 25 ft. Bulk Roll [Red]
Brand: MSD IGNITION
SKU: 121-34019
Price: 115.95 USD
Availability: InStock

^$115⁹⁵

1 left in stock

Ships on Nov 02, 2026

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Replacement/Bulk Wire

Bulk Spark Plug Wire for Building Custom Wire Sets

Fits Universal Custom Spark Plug Wire Applications

8.5 mm Diameter

25 ft. Roll

40 to 50 Ohms of Resistance per 12 in.

Red Insulation

Custom headers, relocated coils and tight chassis clearances all lead to the same place: a wire set that has to be built rather than bought. Bulk wire lets each lead be cut to the length the engine actually needs. This is 8.5 mm Super Conductor wire, which reaches very low resistance without giving up interference suppression.

MSD 34019 Super Conductor 8.5 mm Spark Plug Wire Features:

8.5 mm diameter Super Conductor spark plug wire.
25 ft. bulk roll in red.
Only 40 to 50 ohms of resistance in a 12 in. length.
Low resistance without electronic interference.
Terminals and boots sold separately for building custom sets.

MSD's Universal Spark Plug Wire Sets are available in your choice of black or red wire for a variety of applications and include a spark plug terminal and installed boot with one open end. The set also includes distributor cap boots and terminals so the wire can cut to a specified length and installed with the supplied mini-stripper-crimper.

MSD's Replacement Spark Plug Wires and Coil Wires are made with the same Super Conductor wire as their universal and pre-made sets, just longer than normal for custom tailoring when you need that extra length.

Features:

Only 40-50 ohms resistance per foot of wire (lowest of any helically-wound wire)
MSD Ignition Copper alloy conductors result in less spark energy loss so more reaches spark plugs
Over 40 feet of conductor per foot of wire
Conductors are wrapped around ferro-magnetic center cores, which effectively suppresses electro magnetic interference
Outer sleeves consist of silicone and synthetic material for a strong resistance to heat, abrasion, and tearing.

JEGS Easy Kits are designed by JEGS high performance racing professionals to help you get all the performance parts you need for your race car, hot rod or truck.