MSD 34049 Super Conductor 8.5mm Bulk Spark Plug Wire 100 Foot Red

The MSD 34049 Super Conductor 8.5mm Bulk Spark Plug Wire delivers 100 feet of premium ignition wire for custom spark plug wire fabrication. Engineered from the inside out, this 8.5mm wire combines ultra-low electrical resistance with highly effective EMI suppression — a combination rarely achieved in a single ignition wire.

Ultra-Low Resistance Design:

In a single 12-inch length of Super Conductor wire, resistance measures just 40–50 ohms — the lowest of any helically wound spark plug wire. A copper alloy conductor is wound extremely tight around a special center core, packing over 40 feet of conductor material into every single foot of finished wire. This tight helical winding, combined with a ferro-magnetic impregnated center core, creates an effective EMI choke that keeps electromagnetic interference contained within the wire and away from sensitive vehicle electronics.

Key Features:

• Wire Diameter: 8.5mm
• Length: 100 feet — sold as a single bulk spool
• Color: Red
• Resistance: Only 40–50 ohms per 12-inch length — lowest of any helically wound wire
• Conductor: Copper alloy for superior voltage transfer
• EMI/RFI Suppression: Ferro-magnetic impregnated center core acts as an effective EMI choke
• Outer Sleeve: Proprietary silicone and synthetic blend — highly resistant to heat, abrasion, and tearing
• Emissions Legal: Legal for use on emissions-controlled, non-emissions-controlled, and race-only vehicles
• Boots/Terminals Included: No — bulk wire only

The outer sleeve surrounding the conductor assembly uses a proprietary blend of silicone and synthetic material, providing excellent resistance to high heat, abrasion, and tears — essential for performance engine environments. This bulk spool is ideal for builders who need custom-length plug wires beyond what standard pre-made sets provide, or for those fabricating complete custom ignition wire harnesses.