MSD Super Conductor Spark Plug Wires — 8.5mm Black Performance Set, Low Resistance & EMI Suppression

MSD 35593 Super Conductor spark plug wires are an 8.5mm high-performance wire set engineered for low-resistance ignition delivery and superior EMI suppression in street and race engines.

This black 8.5mm wire set from MSD combines a tightly wound conductor, a ferro-magnetic choke, and a heat-resistant outer sleeve to deliver consistent spark energy under demanding conditions. The construction balances low electrical resistance with mechanical strength, while the EMI-reducing design helps prevent interference with sensitive electronics and ignition timing. The result is a reliable plug-to-coil connection built to withstand heat, vibration, and abrasion.

How do these wires improve ignition reliability?

The MSD Super Conductor wires minimize resistance so more voltage reaches the spark plug, producing a stronger, more consistent spark. Their tightly wrapped conductor and ferro-magnetic core reduce stray electrical noise that can interrupt ignition components or onboard sensors.

• Less than 50 ohms per foot for lower voltage loss
• Forty feet of conductor wound into each foot for maximum EMI suppression
• Ferro-magnetic impregnated core acts as an EMI choke

What materials make these wires durable?

MSD selected robust components to resist heat, abrasion, and mechanical stress. The conductor core uses aramid fiber to improve tensile strength, while the outer sleeve is formulated to withstand high underhood temperatures and rubbing points.

• Dupont Kevlar-based conductor core for enhanced tensile strength
• Proprietary high-heat, abrasion-resistant outer sleeve compound
• Durable termination design compatible with performance engines

Will these wires reduce electrical interference with electronics?

Yes — the dense winding and ferro-magnetic core work together to suppress electromagnetic interference, lowering the chance of crossfire and misfires and helping protect sensitive electronics and ignition modules.

• High conductor packing density for superior EMI suppression
• Ferro-magnetic core provides effective choke action
• Designed to maintain signal integrity in modern ignition systems

How do I know these fit my application and how hard are they to install?

The MSD 35593 set is an 8.5mm universal-format performance wire package; check compatibility with your engine's spark plug and distributor/coil boots. Installation is straightforward: route wires away from hot components, maintain recommended lengths, and secure with clips or separators for best performance.

• 8.5mm diameter fits most performance plug boots and coil connectors
• Flexible yet robust jacket for easy routing and secure fit
• Follow vehicle-specific firing order and clearance guidelines during install

Who is this for: The MSD 35593 Super Conductor set is suited to car enthusiasts, racers, and tuners who want lower resistance, improved EMI suppression, and durable construction for street, strip, or track use. If you have modern ignition electronics or a high-output coil and need dependable spark delivery under heat and vibration, this wire set is designed to meet those demands without compromise.