MSD Super Conductor spark plug wire set 8.5mm for small-block Chevy — Red, low resistance & EMI suppression

MSD 35599 is an 8.5mm Super Conductor spark plug wire set designed for small-block Chevy engines using an HEI distributor cap, delivering strong spark transfer with advanced EMI suppression.

This red MSD 35599 wire set combines a high-density conductor, heat- and abrasion-resistant outer sleeve, and reinforced core materials to provide dependable ignition performance in street and performance applications. Engineered to minimize electromagnetic interference while keeping resistance low, these wires are intended for use where modern ignition systems and HEI caps demand stable spark delivery and durable construction.

How do these wires reduce radio and electronics interference?

The MSD Super Conductor design uses a tightly wound, ferro-magnetically treated core that acts like a choke against stray electromagnetic pulses. That construction concentrates and attenuates interference before it can affect radios, sensors, or ignition timing systems.

• Ferro-magnetic impregnated core creates effective EMI suppression
• Forty feet of conductor material wound into each foot increases choke effect
• Less than 50 ohms per foot reduces signal loss while controlling emissions

Will these wires handle high under-hood temperatures and wear?

Yes — the outer jacket is a proprietary compound formulated to resist heat and mechanical abrasion common in engine bays. Internally, the conductor is reinforced with high-strength Kevlar fibers to resist stretching and to maintain connection integrity under vibration and thermal cycling.

• Durable sleeve resists high heat and abrasion for longer life
• Dupont Kevlar in the conductor core increases tensile strength
• Robust construction minimizes cracking and insulation breakdown over time

How compatible and easy to install are they on a small-block Chevy with HEI?

MSD 35599 is sized at 8.5mm, a common diameter for performance ignition wires, and is built to interface cleanly with HEI distributor caps. The wiring set is trimmed and routed to fit typical small-block Chevy layouts, offering straightforward swaps or upgrades from worn stock wires.

• 8.5mm diameter fits standard performance towers and HEI caps
• Pre-cut lengths match common small-block Chevy cylinder layouts
• Red jacket allows quick visual routing and inspection under the hood

What electrical performance should I expect under load?

The set maintains low resistance (under 50 ohms per foot) to promote consistent spark energy at the plug while still providing the EMI suppression needed in modern ignition environments. That balance aims to support reliable combustion across a range of operating conditions without unnecessarily sacrificing noise control.

• Low electrical resistance supports strong spark delivery
• High suppression prevents misfires caused by interference
• Optimized for both street-driven and higher-demand ignition systems

Who is this for: The MSD 35599 8.5mm Super Conductor set is intended for owners of small-block Chevy engines using HEI-type distributor caps who want a durable, low-resistance ignition wire that also controls electromagnetic interference. It suits daily drivers needing a reliable replacement, enthusiasts upgrading ignition components, and anyone wanting a visibly distinctive red wire set that stands up to heat, abrasion, and vibration in performance-oriented engine bays.